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A139296
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2^(2p - 1)/2, where p is a Mersenne prime A000668(n).
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3
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OFFSET
| 1,1
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COMMENTS
| a(5) has 4931 digits and is too large to include. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 30 2008
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FORMULA
| a(n) = 2^(2*A000668(n)-1)/2.
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CROSSREFS
| Cf. A000668, A139286, A139294, A139295, A139297, A139298, A139299, A139300, A139301, A139302, A139303, A139304, A139305, A139306.
Sequence in context: A053863 A053765 A193134 * A176369 A090045 A201241
Adjacent sequences: A139293 A139294 A139295 * A139297 A139298 A139299
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KEYWORD
| bref,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Apr 13 2008
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EXTENSIONS
| One more term from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 30 2008
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