A258317 Row sums of triangle A258197.

0, 0, 1, 2, 13, 16, 50, 46, 331, 710, 1530, 1968, 6694, 8352, 15550, 24890, 133573, 181552, 486054, 641978, 1840816, 3296140, 6314768, 7452540, 34421218, 59313706, 110347662, 258695534, 627750404, 874913936, 2053073798, 2556088458, 12615058063, 22442790438

Offset

0,4

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..1000

Formula

a(n) = Sum_{k=0..n} A258197(n,k).

Prog

(Haskell)
a258317 = sum . a258197_row
(PARI) f(n) = vecsum([n/f[1]*f[2]|f<-factor(n+!n)~]); \\ A003415
a(n) = vecsum(vector(n+1, k, f(binomial(n, k-1)))); \\ Michel Marcus, Jan 23 2022

Crossrefs

Cf. A258197.

Sequence in context: A032453 A298295 A257636 * A318911 A065245 A158845

Adjacent sequences: A258314 A258315 A258316 * A258318 A258319 A258320

Keyword

nonn

Author

Reinhard Zumkeller, May 26 2015

Status

approved