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

Author

Reinhard Zumkeller, May 26 2015

Keywords

• nonn

Links

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

Crossrefs

Cf. A258197.

Programs

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

Formula

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