A024676 a(n) is the number of prime divisors (counted by multiplicity) of A024675(n).

2, 2, 2, 3, 2, 3, 2, 2, 3, 2, 2, 3, 3, 3, 4, 4, 6, 2, 5, 3, 4, 2, 2, 3, 3, 3, 5, 2, 5, 2, 2, 3, 6, 4, 3, 6, 3, 3, 5, 5, 3, 7, 3, 4, 2, 2, 4, 4, 3, 3, 6, 3, 2, 4, 3, 5, 2, 3, 3, 7, 5, 2, 5, 4, 6, 2, 4, 4, 4, 3, 3, 3, 4, 2, 2, 2, 3, 5, 4, 5, 3, 7, 3, 4, 2, 2, 4, 4, 3, 2, 3, 2, 4, 2, 3, 2, 4, 4, 6

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A024675, A001222.

Programs

Maple

seq(numtheory:-bigomega((ithprime(n+1)+ithprime(n+2))/2), n=1..100); # Robert Israel, Jan 22 2024

Formula

a(n) = A001222(A024675(n)).

Extensions

Edited by Robert Israel, Jan 22 2024