A080567 - OEIS

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A080567

1 + Sum_{k=2..n} 2^((prime(k)-1)/2).

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; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Take an initial segment of A080545, stopping at the n-th 1, reverse and interpret as a binary number.`
	CROSSREFS	`Cf. A080355, A080545.` `Sequence in context: A050565 A097111 A151401 * A146448 A192169 A023370` `Adjacent sequences: A080564 A080565 A080566 * A080568 A080569 A080570`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), based on information supplied by Artur Jasinski (grafix(AT)csl.pl), Mar 21 2003`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 26 2003`

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Last modified February 13 17:43 EST 2012. Contains 205523 sequences.