A165842 Totally multiplicative sequence with a(p) = 21.

1, 21, 21, 441, 21, 441, 21, 9261, 441, 441, 21, 9261, 21, 441, 441, 194481, 21, 9261, 21, 9261, 441, 441, 21, 194481, 441, 441, 9261, 9261, 21, 9261, 21, 4084101, 441, 441, 441, 194481, 21, 441, 441, 194481, 21, 9261, 21, 9261, 9261, 441, 21, 4084101, 441

Offset: 1

Author

Jaroslav Krizek, Sep 28 2009

Keywords

• nonn
• mult

Links

• G. C. Greubel, Table of n, a(n) for n = 1..10000

Programs

Mathematica

21^PrimeOmega[Range[100]] (* G. C. Greubel, Apr 09 2016 *)

Formula

a(n) = A009965(A001222(n)) = 21^bigomega(n) = 21^A001222(n).