A181513 Row sums of A181512.

1, 2, 5, 19, 81, 436, 2659, 18929, 151961, 1372006, 13727751, 151082317, 1813127521, 23572305056, 330015348125, 4950272034871, 79204431814209, 1346476570905658, 24236580631587967, 460495073132799509, 9209901542049111821, 193407933924673029472

Offset

1,2

Links

Table of n, a(n) for n=1..22.

Formula

a(n) = A178887(n) / n. - Andrew Howroyd, Oct 02 2025

Example

a(4) = 1+3+3+6+6 = 19.

Crossrefs

Cf. A178887, A181511, A181512.

Sequence in context: A377785 A288911 A138911 * A262165 A219661 A179566

Adjacent sequences: A181510 A181511 A181512 * A181514 A181515 A181516

Keyword

nonn

Author

Alford Arnold, Oct 26 2010

Extensions

a(8) onwards from Andrew Howroyd, Oct 02 2025

Status

approved