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A139230
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Second differences of perfect numbers A000396.
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10
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OFFSET
| 1,1
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CROSSREFS
| Cf. A000396, A139228, A139229, A139231, A139232, A139233, A139234, A139235, A139236, A139237.
Sequence in context: A160583 A025354 A025346 * A065576 A200071 A203960
Adjacent sequences: A139227 A139228 A139229 * A139231 A139232 A139233
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KEYWORD
| nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Apr 19 2008
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