A027454 First diagonal of A027448.

1, 1, 8, 27, 1728, 1000, 216000, 1157625, 21952000, 16003008, 16003008000, 12326391000, 21300003648000, 17053975224000, 13865513485824, 91398648466125, 374368864117248000, 315376239610432000

Offset

1,3

Links

Table of n, a(n) for n=1..18.

Formula

Numerators of sequence a[ n, n ] in (a[ i, j ])^4 where a[ i, j ] = 1/i if j<=i, 0 if j>i

Crossrefs

Sequence in context: A272245 A115701 A030483 * A229114 A088029 A126815

Adjacent sequences: A027451 A027452 A027453 * A027455 A027456 A027457

Keyword

nonn

Author

Olivier Gérard

Status

approved