A027542 Second diagonal of A027538.

7, 52, 231, 806, 2451, 6840, 18031, 45682, 112443, 270788, 641031, 1496574, 3453859, 7893232, 17886687, 40233578, 89908875, 199746108, 441441655, 970971190, 2126500467, 4638886952, 10083091791, 21843918306, 47177512411, 101602798900, 218238002151, 467614538222

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])^3 where b[i, j] = A008292(i, j) / i! if j<=i, 0 if j>i.

Crossrefs

Sequence in context: A138849 A057675 A206809 * A254946 A258845 A037593

Adjacent sequences: A027539 A027540 A027541 * A027543 A027544 A027545

Keyword

nonn

Author

Olivier Gérard

Extensions

More terms from Sean A. Irvine, Nov 07 2019

Status

approved