A334861 - OEIS

A334861

a(n) = A329697(n) + A331410(n).

0, 0, 2, 0, 3, 2, 3, 0, 4, 3, 4, 2, 4, 3, 5, 0, 4, 4, 6, 3, 5, 4, 5, 2, 6, 4, 6, 3, 7, 5, 4, 0, 6, 4, 6, 4, 7, 6, 6, 3, 5, 5, 7, 4, 7, 5, 6, 2, 6, 6, 6, 4, 7, 6, 7, 3, 8, 7, 8, 5, 5, 4, 7, 0, 7, 6, 8, 4, 7, 6, 7, 4, 8, 7, 8, 6, 7, 6, 7, 3, 8, 5, 6, 5, 7, 7, 9, 4, 8, 7, 7, 5, 6, 6, 9, 2, 5, 6, 8, 6, 8, 6, 6, 4, 8

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OFFSET

1,3

COMMENTS

Completely additive because A329697 and A331410 are. No 1's occur as terms.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

FORMULA

a(n) = A329697(n) + A331410(n).

a(2) = 0, a(p) = 2+A329697(p-1)+A331410(p+1) for odd primes p, a(m*n) = a(m)+a(n), if m,n > 1.

PROG

(PARI)