A392744 a(n) = Sum_{k=0..n} |Stirling1(n+k,2*k)|.

1, 1, 4, 22, 157, 1368, 13995, 163779, 2152349, 31326760, 499539900, 8651755865, 161591063250, 3235298221401, 69085973044125, 1566556077233897, 37577774143362824, 950374452156347514, 25266942445833523121, 704302695217027889560, 20534611808242819061155, 624893326066824277558519

Offset

0,3

Links

Table of n, a(n) for n=0..21.

Mathematica

Table[Sum[Abs@StirlingS1[n+k, 2*k], {k, 0, n}], {n, 1, 25}]

Crossrefs

Cf. A229286, A392733.

Sequence in context: A197925 A112697 A327994 * A113717 A379933 A124563

Adjacent sequences: A392741 A392742 A392743 * A392745 A392746 A392747

Keyword

nonn

Author

Vaclav Kotesovec, Jan 21 2026

Status

approved