OFFSET
1,2
EXAMPLE
Triangle of compositions begins:
(1),
(2),(11),
(3),(21),(12),(111),
(4),(31),(22),(13),(211),(121),(112),(1111),
(5),(41),(32),(23),(14),(311),(221),(212),(131),(122),(113),(2111),(1211),(1121),(1112),(11111).
MATHEMATICA
Table[Sort[Join@@Permutations/@IntegerPartitions[n], Or[Length[#1]<Length[#2], Length[#1]===Length[#2]&&OrderedQ[{#2, #1}]]&], {n, 6}]
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Gus Wiseman, Dec 20 2017
STATUS
approved