id:A008345 - OEIS Search Results

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a(n+1) = a(n)-b(n+1) if a(n) >= b(n+1) else a(n)+b(n+1), where {b(n)} are the triangular numbers A000217.

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0, 1, 4, 10, 0, 15, 36, 8, 44, 89, 34, 100, 22, 113, 8, 128, 264, 111, 282, 92, 302, 71, 324, 48, 348, 23, 374, 752, 346, 781, 316, 812, 284, 845, 250, 880, 214, 917, 176, 956, 136, 997, 94, 1040, 50 (list; graph; listen)

	OFFSET	`0,3`
	MAPLE	`A008345 := proc(n) option remember; if n = 1 then n-1 elif A008345(n-1) >= n(n+1)/2 then A008345(n-1)-n(n+1)/2 else A008345(n-1)+n*(n+1)/2; fi; end;`
	CROSSREFS	`Adjacent sequences: A008342 A008343 A008344 this_sequence A008346 A008347 A008348` `Sequence in context: A073172 A111443 A051499 this_sequence A016488 A087212 A048870`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas and J. H. Conway (conway(AT)math.princeton.edu)`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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