A027531 First column of A027517.

1, 7, 85, 814, 102727, 12277291, 46825417, 65344835, 84274153, 112772640, 2289634277, 3032809277, 19401126651121, 4053853857998431, 20352163396468207, 25839812150858087, 16032124053604289, 40337156045251101, 2434594429238659671, 1093231405659415842773

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Formula

Numerators of sequence a[1, n] in A=(b[i, j])^3 where b[i, j] = A008284(i, j) / Partitions(i) if j<=i, 0 if j>i.

Crossrefs

Sequence in context: A027459 A329108 A162160 * A155459 A155631 A126344

Adjacent sequences: A027528 A027529 A027530 * A027532 A027533 A027534

Keyword

nonn

Author

Olivier Gérard

Extensions

More terms from Sean A. Irvine, Nov 06 2019

Status

approved