A351943 a(n) = A069359(A181819(n)).

0, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 5, 1, 2, 2, 1, 1, 5, 1, 5, 2, 2, 1, 7, 1, 2, 1, 5, 1, 4, 1, 1, 2, 2, 2, 3, 1, 2, 2, 7, 1, 4, 1, 5, 5, 2, 1, 9, 1, 5, 2, 5, 1, 7, 2, 7, 2, 2, 1, 10, 1, 2, 5, 1, 2, 4, 1, 5, 2, 4, 1, 8, 1, 2, 5, 5, 2, 4, 1, 9, 1, 2, 1, 10, 2, 2, 2, 7, 1, 10, 2, 5, 2, 2, 2, 13, 1, 5, 5, 3, 1, 4, 1, 7, 4

Offset: 1

Author

Antti Karttunen, Apr 02 2022

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..20000
• Index entries for sequences computed from exponents in factorization of n

Crossrefs

Cf. A069359, A181819.

Coincides with A351942 on the positions given by A130091.

Programs

PARI

A069359(n) = (n*sumdiv(n, d, isprime(d)/d)); \\ From A069359
A181819(n) = factorback(apply(e->prime(e),(factor(n)[,2])));
A351943(n) = A069359(A181819(n));