OFFSET
0,3
COMMENTS
EXAMPLE
The a(1) = 1 through a(3) = 9 compositions:
(2) (4) (6)
(1,3) (1,5)
(3,1) (2,4)
(4,2)
(5,1)
(1,1,4)
(1,4,1)
(2,2,2)
(4,1,1)
MATHEMATICA
Table[Length[Select[Join@@Permutations/@IntegerPartitions[2n], !MemberQ[Total/@Subsets[#], n]&]], {n, 0, 5}]
CROSSREFS
The complement is counted by A064914.
KEYWORD
nonn,more
AUTHOR
Gus Wiseman, Apr 20 2024
STATUS
approved