A273938 Sum of the divisors of the n-th odd prime power.

1, 4, 6, 8, 13, 12, 14, 18, 20, 24, 31, 40, 30, 32, 38, 42, 44, 48, 57, 54, 60, 62, 68, 72, 74, 80, 121, 84, 90, 98, 102, 104, 108, 110, 114, 133, 156, 128, 132, 138, 140, 150, 152, 158, 164, 168, 183, 174, 180, 182, 192, 194, 198, 200, 212, 224, 228, 230

Offset: 1

Author

R. J. Mathar, Jun 04 2016

Keywords

• nonn

Crossrefs

Cf. A061345, A086455, A247837.

Programs

Maple

A273938 := proc(n)
        numtheory[sigma](A061345(n-1)) ;
end proc:

Formula

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