A327027 -id:A327027 - cp's OEIS frontend

A327026 a(n) = (1/n) Sum_{k=0..n} Sum_{d|n} phi(d) A241171(n/d, k) for n >= 1, a(0) = 1.

1, 1, 4, 41, 979, 40549, 2571724, 231313681, 28007660854, 4392400716381, 866132386622878, 209744116289535001, 61192264076350570149, 21169177815206345045941, 8568352429497412897973944, 4011525608882608159230362521, 2151041235686896366408288920529

Offset: 0

Graph
List
Refs
Listen
History
Text
Internal format

Peter Luschny, Aug 20 2019

nonn

Row sums of A327027.

seq(add(A327027(n, k), k=0..n), n=0..18);

a[n_] := Sum[A327027[n, k], {k, 0, n}]; Table[a[n], {n, 0, 16}]

cp's OEIS Frontend

A327026 a(n) = (1/n) Sum_{k=0..n} Sum_{d|n} phi(d) A241171(n/d, k) for n >= 1, a(0) = 1.

Views

Author

Keywords

Crossrefs

Programs

Maple

Mathematica