A027552 First column of A027539.

1, 15, 1135, 270505, 156871831, 188025705967, 416173882222435, 1566458213011786353, 9414868642191013899763, 85981737271975254601910791, 1146206793004124302295533827799, 21577353890734087115034666517219417, 557877603681751612952474803153076092591

Offset

1,2

Links

Table of n, a(n) for n=1..13.

Formula

Numerators of sequence a[1, n] in A=(b[i, j])^4 where b[i, j] = A008292(i, j) / i! if j<=i, 0 if j>i.

Crossrefs

Sequence in context: A208346 A236329 A129764 * A212857 A266581 A337677

Adjacent sequences: A027549 A027550 A027551 * A027553 A027554 A027555

Keyword

nonn

Author

Olivier Gérard

Status

approved