id:A037458 - OEIS Search Results

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a(1)=1; for n > 1, a(n)=n-a(n-sqrtint(n)) where sqrtint(n) denotes floor(sqrt(n)).

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1, 1, 2, 3, 3, 3, 4, 5, 6, 6, 6, 6, 7, 8, 9, 10, 10, 10, 10, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 16, 17, 18, 19, 20, 21, 21, 21, 21, 21, 21, 21, 22, 23, 24, 25, 26, 27, 28, 28, 28, 28, 28, 28, 28, 28, 29, 30, 31, 32, 33, 34, 35, 36, 36, 36, 36, 36, 36, 36, 36, 36, 37, 38 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n)=(1/2)*(n+A053615(n))`
	PROGRAM	`(PARI) a(n)=if(n<2, 1, n-a(n-sqrtint(n)))`
	CROSSREFS	`Sequence in context: A137512 A157943 A051134 this_sequence A064474 A072688 A120504` `Adjacent sequences: A037455 A037456 A037457 this_sequence A037459 A037460 A037461`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 22 2002`
	EXTENSIONS	`Corrected by Franklin T. Adams-Watters, Oct 25 2006`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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