1,4

a(n) = 1 iff n=1 or n is prime. - Wesley Ivan Hurt, Jun 05 2014

Antti Karttunen, Table of n, a(n) for n = 1..10000

Index entries for sequences computed from exponents in factorization of n

a(n) = A000142(A001222(n)).

PrimeOmega[Range[90]]! (* Harvey P. Dale, Nov 14 2011 *)

(PARI) A130675(n) = bigomega(n)! \\ Antti Karttunen, Jul 07 2017

Cf. A000142, A001222, A086568.

Sequence in context: A186726 A205405 A112623 * A319118 A163820 A284465

Adjacent sequences: A130672 A130673 A130674 * A130676 A130677 A130678

nonn,easy

Giovanni Teofilatto, Aug 12 2007

A 16 split into 1,6, a 21 split into 2,1, a(1) replaced by 1, and definition clarified by R. J. Mathar, Aug 23 2010

approved