OFFSET
1,4
COMMENTS
a(n) = 1 iff n=1 or n is prime. - Wesley Ivan Hurt, Jun 05 2014
LINKS
FORMULA
MATHEMATICA
PrimeOmega[Range[90]]! (* Harvey P. Dale, Nov 14 2011 *)
PROG
(PARI) A130675(n) = bigomega(n)! \\ Antti Karttunen, Jul 07 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Giovanni Teofilatto, Aug 12 2007
EXTENSIONS
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
STATUS
approved