id:A098780 - OEIS Search Results

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First n numbers in binary representation concatenated in reverse order.

+0
1

1, 5, 29, 157, 1437, 13725, 128413, 1176989, 20051357, 355595677, 6261175709, 109340390813, 1896046785949, 32682372363677, 560447953696157, 95676472084371, 49, 315812421869630877, 10692105963331253661 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n)=n*A000079(A070939(a(n-1)))+a(n-1); a(1) = 1.`
	FORMULA	`a(n) = n*2^(1+floor[log2(a(n-1))]) + a(n-1); a(1) = 1.`
	EXAMPLE	`a(4) = (4 3 2 1) -> (100 11 10 1) -> 10011101 -> 157.`
	CROSSREFS	`Cf. A047778, A007088.` `Sequence in context: A027864 A065541 A060926 this_sequence A146178 A015537 A141812` `Adjacent sequences: A098777 A098778 A098779 this_sequence A098781 A098782 A098783`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 04 2004`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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