A027526 Second diagonal of A027518.

15, 65, 544, 95904, 27540000, 24685024, 8997919, 3085628, 1181928, 29115625, 11863125, 2480664960000, 1568086049632256, 5407450595090173, 2421230660560125, 548614676480000, 511258237124608, 82285752611980800, 272004181082358372864, 131863370410536093000

Offset

2,1

Links

Table of n, a(n) for n=2..21.

Formula

Numerators of sequence a[n, n-1] in A=(b[i, j])^4 where b[i, j] = A008284(i, j) / Partitions(i) if j<=i, 0 if j>i.

Crossrefs

Sequence in context: A152729 A055268 A090026 * A334802 A284898 A033653

Adjacent sequences: A027523 A027524 A027525 * A027527 A027528 A027529

Keyword

nonn

Author

Olivier Gérard

Extensions

More terms from Sean A. Irvine, Nov 06 2019

Status

approved