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Search: id:A139230
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A139230 Second differences of perfect numbers A000396. +0
11
446, 7164, 33534576, 8522776512 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Cf. A000396, A139228, A139229, A139231, A139232, A139233, A139234, A139235, A139236, A139237.

Adjacent sequences: A139227 A139228 A139229 this_sequence A139231 A139232 A139233

Sequence in context: A105985 A025354 A025346 this_sequence A065576 A062040 A093786

KEYWORD

nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Apr 19 2008

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.


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