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A127085 Column 2 of triangle A127082. 10
1, 3, 15, 85, 531, 3600, 26266, 205353, 1716582, 15321056, 145819266, 1477589301, 15908557455, 181553715486, 2190398368254, 27859946518796, 372542199781464, 5223365137285467, 76597458027515272, 1172078722366916586 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

COMMENTS

Convolution cube of A127088.

LINKS

G. C. Greubel, Table of n, a(n) for n = 2..80

MATHEMATICA

T[n_, k_]:= T[n, k]= If[k==n, 1, Coefficient[(1 + x*Sum[x^(r-k)*Sum[T[r, c], {c, k, r}], {r, k, n-1}] + x^(n+1))^(k+1), x, n-k]]; Table[T[n, 2], {n, 2, 25}] (* G. C. Greubel, Jan 30 2020 *)

CROSSREFS

Cf. A127082.

Columns of A127082: A127083, A127084, A127086.

Cf. A127087, A127088, A127089, A127090, A127091.

Sequence in context: A084209 A317133 A182016 * A326275 A093615 A191148

Adjacent sequences:  A127082 A127083 A127084 * A127086 A127087 A127088

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Jan 04 2007

STATUS

approved

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Last modified October 26 17:32 EDT 2020. Contains 338027 sequences. (Running on oeis4.)