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Search: id:A080567
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| A080567 |
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1 + Sum_{k=2..n} 2^((prime(k)-1)/2). |
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+0
14
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| 1, 3, 7, 15, 47, 111, 367, 879, 2927, 19311, 52079, 314223, 1362799, 3459951, 11848559, 78957423, 615828335, 1689570159, 10279504751, 44639243119, 113358719855, 663114533743, 2862137789295, 20454323833711, 301929300544367
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Take an initial segment of A080545, stopping at the n-th 1, reverse and interpret as a binary number.
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CROSSREFS
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Cf. A080355, A080545.
Sequence in context: A050565 A097111 A151401 this_sequence A146448 A023370 A096422
Adjacent sequences: A080564 A080565 A080566 this_sequence A080568 A080569 A080570
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), based on information supplied by Artur Jasinski (grafix(AT)csl.pl), Mar 21 2003
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 26 2003
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