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A139288
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2^(2p - 1)/2, where p is prime.
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8
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4, 16, 256, 4096, 1048576, 16777216, 4294967296, 68719476736, 17592186044416, 72057594037927936, 1152921504606846976, 4722366482869645213696, 1208925819614629174706176, 19342813113834066795298816
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n)=A139286(n)/2.
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CROSSREFS
| Cf. A139286, A139287, A139289, A139290, A139291, A139292, A139293, A139294, A139306.
Sequence in context: A113905 A200045 A099202 * A152921 A152153 A144988
Adjacent sequences: A139285 A139286 A139287 * A139289 A139290 A139291
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KEYWORD
| nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Apr 13 2008
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EXTENSIONS
| More terms from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Jul 16 2010
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