OFFSET
1,3
COMMENTS
Is this sequence nonnegative? If so, is there a combinatorial interpretation?
EXAMPLE
Triangle begins:
1
0 2
1 0 4
0 2 1 0 10
1 0 0 2 2 0 26
0 0 1 4 0 0 0 4 4 0 76
1 0 0 0 0 2 2 4 0 0 0 8 10 0 232
A215366(6,4) = 25 corresponds to the partition (33). Since p(33) = s(6) + 2 s(33) - s(51) + 2 s(222) - 2 s(321) + s(411) + s(3111) - s(21111) + s(111111) has sum of coefficients 1 + 2 - 1 + 2 - 2 + 1 + 1 - 1 + 1 = 4, we conclude T(6,4) = 4.
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Gus Wiseman, Sep 14 2018
STATUS
approved