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Search: id:A139229
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| A139229 |
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First differences of perfect numbers A000396, divided by 2. |
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+0
11
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OFFSET
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1,1
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FORMULA
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a(n) = A139228(n)/2.
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CROSSREFS
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Cf. A000396, A139228, A139230, A139231, A139232, A139233, A139234, A139235, A139236, A139237.
Adjacent sequences: A139226 A139227 A139228 this_sequence A139230 A139231 A139232
Sequence in context: A033864 A142120 A091805 this_sequence A142672 A090921 A089328
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KEYWORD
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nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Apr 19 2008
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