A138874 Last two digits of the n-th even perfect number.

6, 28, 96, 28, 36, 56, 28, 28, 76, 16, 28, 28, 76, 28, 28, 28, 76, 56, 36, 28, 16, 76, 36, 56, 76, 16, 56, 28, 28, 16, 28, 28, 36, 28, 16, 76, 56, 36, 56, 28, 28, 28, 56, 56, 28, 76, 16

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Édouard Lucas: Théorie des nombres. Vol. 1: Le calcul des nombres entiers. Le calcul des nombres rationnels. La divisibilité arithmétique. Paris: Gauthier-Villars, 1891, Nr. 229 (Théorème de Fermat), Ex. V, p. 424-425.

Omar E. Pol, Los numeros perfectos

Crossrefs

Cf. A000396, A080173, A104511, A138875.

Sequence in context: A125310 A336535 A342380 * A172141 A172132 A011856

Adjacent sequences: A138871 A138872 A138873 * A138875 A138876 A138877

Keyword

base,nonn

Author

Omar E. Pol, Apr 02 2008

Extensions

Definition changed (inserting the word "even") and a(39)-a(47) added by Ivan Panchenko, Aug 04 2018

Status

approved