A027455 Second diagonal of A027448.

15, 65, 175, 9963, 5368, 1105000, 5720625, 105686875, 75492928, 74269960128, 56445795000, 96454009575000, 76498373160000, 61692439558464, 403805999193597, 1643804692663258125, 1377243480733120000

Offset

2,1

Links

Table of n, a(n) for n=2..18.

Formula

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

Crossrefs

Sequence in context: A364401 A005917 A218216 * A152729 A055268 A090026

Adjacent sequences: A027452 A027453 A027454 * A027456 A027457 A027458

Keyword

nonn

Author

Olivier Gérard

Status

approved