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

1,2

Links

Table of n, a(n) for n=1..58.

Formula

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

Maple

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

Crossrefs

Cf. A061345, A086455, A247837.

Sequence in context: A286373 A286372 A151760 * A121613 A008438 A141641

Adjacent sequences: A273935 A273936 A273937 * A273939 A273940 A273941

Keyword

nonn

Author

R. J. Mathar, Jun 04 2016

Status

approved