OFFSET

1,2

REFERENCES

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

J. W. L. Glaisher, On the representations of a number as the sum of two, four, six, eight, ten, and twelve squares, Quart. J. Math. 38 (1907), 1-62 (see p. 56).

MAPLE

with(numtheory); [seq(sigma[5](2*n-1), n=1..100)];

MATHEMATICA

DivisorSigma[5, Range[1, 61, 2]] (* Harvey P. Dale, Jan 12 2016 *)

PROG

(PARI) a(n) = sigma(2*n-1, 5); \\ Michel Marcus, Aug 17 2019

(Magma) [DivisorSigma(5, 2*n-1):n in [1..30]]; // Marius A. Burtea, Aug 17 2019

CROSSREFS

KEYWORD

nonn

AUTHOR

N. J. A. Sloane. This sequence was in the 1973 "Handbook", but then was deleted from the database because of confusion with A002594. Resubmitted by Benoit Cloitre, Apr 12 2003. Entry revised by N. J. A. Sloane, Jun 10 2012

EXTENSIONS

Definition clarified by Harvey P. Dale, Jan 12 2016

STATUS

approved