id:A049983 - OEIS Search Results

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a(n)=number of arithmetic progressions of 2 or more positive integers, strictly increasing with sum <= n.

+0
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0, 0, 1, 2, 4, 7, 10, 13, 19, 24, 29, 37, 43, 50, 62, 70, 78, 92, 101, 112, 129, 141, 152, 171, 185, 199, 221, 237, 251, 278, 293, 310, 337, 356, 377, 409, 427, 448, 480, 505, 525, 563, 584, 609, 651, 677, 700, 742, 768, 800, 843 (list; graph; listen)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A130243 A061465 A126022 this_sequence A151986 A101472 A087160` `Adjacent sequences: A049980 A049981 A049982 this_sequence A049984 A049985 A049986`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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