A363366 Antidiagonal sums of A363365.

1, 4, 13, 43, 152, 575, 2314, 9870, 44535, 212242, 1066327, 5635369, 31254046, 181478525, 1100796500, 6960517564, 45791562573, 312867812160, 2216414659873, 16255306015303, 123249020783620, 964832925700315, 7788943826367902, 64770559745065226, 554239921143411715

Offset

1,2

Links

Table of n, a(n) for n=1..25.

Mathematica

A363365[n_, k_]:=((k-1)*(k+1)^(n+1)+k*n-k^2+1)/k^2; Table[Sum[A363365[n-k+1, k], {k, n}], {n, 27}]

Crossrefs

Cf. A363365.

Sequence in context: A003688 A033434 A297928 * A113986 A149426 A042767

Adjacent sequences: A363363 A363364 A363365 * A363367 A363368 A363369

Keyword

nonn

Author

Stefano Spezia, May 29 2023

Status

approved