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A028502 2772-hyperperfect numbers: n = 2772*(sigma(n)-n-1) + 1. 7
95295817, 124035913, 749931337, 4275383113 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

Judson S. McCranie, A Study of Hyperperfect Numbers, Journal of Integer Sequences, Vol. 3 (2000), Article 00.1.3.

CROSSREFS

Cf. A000396, A007593, A220290, A028499, A028500, A028501, A034916.

Sequence in context: A136634 A033625 A128673 * A114662 A250964 A075010

Adjacent sequences:  A028499 A028500 A028501 * A028503 A028504 A028505

KEYWORD

hard,more,nonn

AUTHOR

Jud McCranie

STATUS

approved

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Last modified August 29 10:37 EDT 2015. Contains 261188 sequences.