A341409 - OEIS

A341409

a(n) = (Sum_{k=1..3} k^n) mod n.

0, 0, 0, 2, 1, 2, 6, 2, 0, 4, 6, 2, 6, 0, 6, 2, 6, 2, 6, 18, 15, 14, 6, 2, 1, 14, 0, 14, 6, 14, 6, 2, 3, 14, 31, 2, 6, 14, 36, 18, 6, 38, 6, 10, 36, 14, 6, 2, 13, 24, 36, 46, 6, 2, 1, 42, 36, 14, 6, 38, 6, 14, 36, 2, 16, 2, 6, 30, 36, 14, 6, 2, 6, 14, 51, 22, 17, 14, 6, 18, 0, 14, 6, 38, 21

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OFFSET

1,4

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A001550(n) mod n.

a(A056645(n)) = 0.

MAPLE

a:= n-> add(i&^n, i=1..3) mod n:

seq(a(n), n=1..100); # Alois P. Heinz, Feb 11 2021

MATHEMATICA