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Search: id:A072892
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A072892 The 4-cycle of the n => sigma(n)-n process. sigma(n) is the sum of divisors of n. (A000203) a(4+n)=a(n). +0
1
1264460, 1547860, 1727636, 1305184, 1264460 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A000203, A045477.

Sequence in context: A156113 A118900 A126174 this_sequence A090615 A081430 A147670

Adjacent sequences: A072889 A072890 A072891 this_sequence A072893 A072894 A072895

KEYWORD

fini,full,nonn

AUTHOR

Miklos Kristof (kristmikl(AT)freemail.hu), Jul 29 2002

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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