id:A080567 - OEIS Search Results

Search: id:A080567

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

+0
13

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)

	OFFSET	`1,2`
	COMMENT	`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: A078161 A050565 A097111 this_sequence A023370 A096422 A077775` `Adjacent sequences: A080564 A080565 A080566 this_sequence A080568 A080569 A080570`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas, based on information supplied by Artur Jasinski (grafix(AT)csl.pl), Mar 21 2003`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Mar 26 2003`

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Last modified September 7 23:08 EDT 2008. Contains 143486 sequences.

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