A273938 - OEIS

%I #15 Jun 26 2016 05:38:53

%S 1,4,6,8,13,12,14,18,20,24,31,40,30,32,38,42,44,48,57,54,60,62,68,72,

%T 74,80,121,84,90,98,102,104,108,110,114,133,156,128,132,138,140,150,

%U 152,158,164,168,183,174,180,182,192,194,198,200,212,224,228,230

%N Sum of the divisors of the n-th odd prime power.

%F a(n) = A000203(A061345(n-1)).

%p A273938 := proc(n)

%p         numtheory[sigma](A061345(n-1)) ;

%p end proc:

%Y Cf. A061345, A086455, A247837.

%K nonn

%O 1,2

%A _R. J. Mathar_, Jun 04 2016