id:A122205 - OEIS Search Results

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Number of finite sequences b with b(0) = 1, b(i+1) = b(i)+d where d|b(i), ending with n.

+0
2

1, 1, 1, 2, 2, 5, 5, 12, 17, 31, 31, 96, 96, 197, 324, 629, 629, 1695, 1695, 4374, 6266, 10671, 10671, 34402, 38776, 73274, 109371, 223510, 223510, 634267, 634267, 1527075, 2172013, 3699717, 4557494, 12736034, 12736034, 25473763, 38283071 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(1) = 1, for n>1, a(n) = sum_{d\|n, d<n} a(n-d).`
	CROSSREFS	`Cf. A117497, A122206, A067951.` `Sequence in context: A097896 A030223 A056504 this_sequence A094967 A056505 A056506` `Adjacent sequences: A122202 A122203 A122204 this_sequence A122206 A122207 A122208`
	KEYWORD	`nonn`
	AUTHOR	`Frank Adams-Watters (FrankTAW(AT)Netscape.net), Aug 25 2006`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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