A027521 Third diagonal of A027516.

11, 26, 121, 558, 1178, 784, 567, 397, 1166, 845, 31965, 425752, 647962, 489749, 188365, 289264, 1577216, 23292216, 18324228, 2405956350, 239597946294, 45293834608, 67720569966336, 15565112713248, 108945838021848660, 2970554302260183744, 142825624901607659400

Offset

3,1

Links

Table of n, a(n) for n=3..29.

Formula

Numerators of sequence a[n, n-2] 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: A212018 A046806 A224197 * A238147 A137014 A137013

Adjacent sequences: A027518 A027519 A027520 * A027522 A027523 A027524

Keyword

nonn

Author

Olivier Gérard

Extensions

More terms from Sean A. Irvine, Nov 06 2019

Status

approved