id:A049980 - OEIS Search Results

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a(n)=number of arithmetic progressions of positive integers, strictly increasing with sum n.

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1, 1, 2, 2, 3, 4, 4, 4, 7, 6, 6, 9, 7, 8, 13, 9, 9, 15, 10, 12, 18, 13, 12, 20, 15, 15, 23, 17, 15, 28, 16, 18, 28, 20, 22, 33, 19, 22, 33, 26, 21, 39, 22, 26, 43, 27, 24, 43, 27, 33, 44, 31, 27, 50, 34, 34, 49, 34, 30, 60, 31, 36, 57, 38, 40 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A104351 A070172 A130128 this_sequence A141525 A071475 A112778` `Adjacent sequences: A049977 A049978 A049979 this_sequence A049981 A049982 A049983`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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