OFFSET
3,2
COMMENTS
This is A276850 with the row polynomials P(n) divided by n+1 and with odd-indexed rows additionally multiplied by 2.
MATHEMATICA
rows[nn_] := With[{s = InverseSeries[t (1 + Sum[u[k] t^k, {k, nn}] + O[t]^(nn+1))]}, Table[Mod[n, 2, 1] (Length[p]-1) Coefficient[s, t^(n+1) Product[u[w], {w, p}]] / (n+2), {n, nn}, {p, Most@Reverse@Sort[Sort /@ IntegerPartitions[n]]}]];
rows[8] // Flatten (* Andrey Zabolotskiy, Mar 08 2024 *)
CROSSREFS
KEYWORD
sign,tabf
AUTHOR
Tom Copeland, Sep 21 2016
EXTENSIONS
Corrected and extended by Andrey Zabolotskiy, Mar 08 2024
STATUS
approved