A380843 Antidiagonal sums of the array A380841.

1, 1, 2, 7, 35, 237, 2040, 21255, 259591, 3633549, 57320398, 1005959831, 19436938571, 409965565469, 9372278051700, 230832086585495, 6093185704307967, 171604903098322813, 5136091192685429770, 162792009969153667111, 5447239135976543715731, 191888373741260775025741

Offset: 0

Author

Stefano Spezia, Feb 05 2025

Keywords

• nonn

Crossrefs

Cf. A380841.

Programs

Mathematica

A380841[n_,k_]:=n!SeriesCoefficient[1/(1-x*Exp[x])^k,{x,0,n}]; a[n_]:=Sum[A380841[n-k,k],{k,0,n}]; Array[a,22,0]