A165828 Totally multiplicative sequence with a(p) = 7.
1, 7, 7, 49, 7, 49, 7, 343, 49, 49, 7, 343, 7, 49, 49, 2401, 7, 343, 7, 343, 49, 49, 7, 2401, 49, 49, 343, 343, 7, 343, 7, 16807, 49, 49, 49, 2401, 7, 49, 49, 2401, 7, 343, 7, 343, 343, 49, 7, 16807, 49, 343
Offset: 1
Links
- G. C. Greubel, Table of n, a(n) for n = 1..10000
Programs
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Mathematica
7^PrimeOmega[Range[100]] (* G. C. Greubel, Apr 09 2016 *)
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PARI
a(n) = 7^bigomega(n); \\ Altug Alkan, Apr 09 2016
Formula
Dirichlet g.f.: Product_{p prime} 1 / (1 - 7 * p^(-s)). - Ilya Gutkovskiy, Oct 30 2019