Index: head/math/Makefile
===================================================================
--- head/math/Makefile
+++ head/math/Makefile
@@ -342,6 +342,7 @@
     SUBDIR += msieve
     SUBDIR += mtl
     SUBDIR += mtrxmath
+    SUBDIR += multichoose
     SUBDIR += mumps
     SUBDIR += mumps-edf
     SUBDIR += mumps-mpich
Index: head/math/multichoose/Makefile
===================================================================
--- head/math/multichoose/Makefile
+++ head/math/multichoose/Makefile
@@ -0,0 +1,22 @@
+# $FreeBSD$
+
+PORTNAME=		multichoose
+DISTVERSIONPREFIX=	v
+DISTVERSION=		1.0.3-2
+DISTVERSIONSUFFIX=	-g3b8d14e
+CATEGORIES=		math
+
+MAINTAINER=	jwb@FreeBSD.org
+COMMENT=	Generate multiset combinations (n multichoose k)
+
+LICENSE=	MIT
+
+USES=		python shebangfix
+SHEBANG_FILES=	*.py
+USE_GITHUB=	yes
+GH_ACCOUNT=	ekg
+
+MAKEFILE=	${FILESDIR}/Makefile
+INSTALL_TARGET=	install-strip
+
+.include <bsd.port.mk>
Index: head/math/multichoose/distinfo
===================================================================
--- head/math/multichoose/distinfo
+++ head/math/multichoose/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1523601462
+SHA256 (ekg-multichoose-v1.0.3-2-g3b8d14e_GH0.tar.gz) = 31eaeb816842094468c8204f9eb96bc825f2e60bc8528d593002ebb66532548e
+SIZE (ekg-multichoose-v1.0.3-2-g3b8d14e_GH0.tar.gz) = 6555
Index: head/math/multichoose/files/Makefile
===================================================================
--- head/math/multichoose/files/Makefile
+++ head/math/multichoose/files/Makefile
@@ -0,0 +1,46 @@
+
+# Use ?= to allow overriding from the env or command-line, e.g.
+#
+#       make CXXFLAGS="-O3 -fPIC" install
+#
+# Package managers will override many of these variables automatically, so
+# this is aimed at making it easy to create packages (Debian packages,
+# FreeBSD ports, MacPorts, pkgsrc, etc.)
+
+CC ?=		cc
+CXX ?=		c++
+DESTDIR ?=	stage
+PREFIX ?=	/usr/local
+MKDIR ?=	mkdir
+INSTALL ?=	install -c
+STRIP ?=	strip
+AR ?=		ar
+
+BINS =	multichoose cmultichoose multipermute
+
+all: ${BINS}
+
+#multichoose_recursive: multichoose_recursive.cpp
+#	${CXX} multichoose_recursive.cpp -o multichoose_recursive
+
+multichoose: multichoose.cpp multichoose.h
+	${CXX} multichoose.cpp -o multichoose
+
+multipermute: multipermute.cpp multipermute.h
+	${CXX} multipermute.cpp -o multipermute
+
+cmultichoose: multichoose.c
+	${CC} multichoose.c -o cmultichoose
+
+install: all
+	${MKDIR} -p ${DESTDIR}${PREFIX}/bin
+	${MKDIR} -p ${DESTDIR}${PREFIX}/include/multichoose
+	${INSTALL} ${BINS} ${DESTDIR}${PREFIX}/bin
+	${INSTALL} *.py ${DESTDIR}${PREFIX}/bin
+	${INSTALL} *.h ${DESTDIR}${PREFIX}/include/multichoose
+
+install-strip: install
+	${STRIP} ${DESTDIR}${PREFIX}/bin/*e
+
+clean:
+	rm -rf ${BINS} ${DESTDIR}
Index: head/math/multichoose/pkg-descr
===================================================================
--- head/math/multichoose/pkg-descr
+++ head/math/multichoose/pkg-descr
@@ -0,0 +1,6 @@
+Efficient loopless multiset combination generation algorithm which is
+(approximately) described in "Loopless algorithms for generating permutations,
+combinations, and other combinatorial configurations." G Ehrlich - Journal of
+the ACM (JACM), 1973. (Algorithm 7.)
+
+WWW: https://github.com/ekg/multichoose
Index: head/math/multichoose/pkg-plist
===================================================================
--- head/math/multichoose/pkg-plist
+++ head/math/multichoose/pkg-plist
@@ -0,0 +1,7 @@
+bin/cmultichoose
+bin/multichoose
+bin/multichoose.py
+bin/multipermute
+bin/multipermute.py
+include/multichoose/multichoose.h
+include/multichoose/multipermute.h