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Search: id:A139290
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| A139290 |
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2^(2p - 1)/4, where p is prime. |
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+0
9
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| 2, 8, 128, 2048, 524288, 8388608, 2147483648, 34359738368
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OFFSET
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1,1
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FORMULA
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a(n)=A139286(n)/4.
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CROSSREFS
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Cf. A139286, A139287, A139288, A139289, A139290, A139292, A139293, A139294, A139306.
Sequence in context: A081856 A038533 A030164 this_sequence A152922 A114977 A011822
Adjacent sequences: A139287 A139288 A139289 this_sequence A139291 A139292 A139293
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KEYWORD
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more,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Apr 13 2008
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