A027520 Second diagonal of A027516.

3, 5, 8, 36, 180, 364, 259, 182, 132, 385, 285, 10680, 145376, 219877, 168165, 64640, 100192, 545400, 8122824, 6384210, 843458070, 84042274932, 15962119184, 23871960702156, 5511685192650, 38598284741704380, 1055992783247033184, 50820437468424030120

Offset

2,1

Links

Table of n, a(n) for n=2..29.

Formula

Numerators of sequence a[n, n-1] in A=(b[i, j])^2 where b[i, j] = A008284(i, j) / Partitions(i) if j<=i, 0 if j>i.

Crossrefs

Sequence in context: A368740 A373967 A353605 * A195548 A174529 A174442

Adjacent sequences: A027517 A027518 A027519 * A027521 A027522 A027523

Keyword

nonn

Author

Olivier Gérard

Extensions

More terms from Sean A. Irvine, Nov 06 2019

Status

approved