id:A049991 - OEIS Search Results

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

+0
1

0, 1, 3, 6, 9, 15, 19, 25, 33, 41, 47, 60, 67, 77, 92, 104, 113, 132, 142, 158, 178, 193, 205, 231, 247, 264, 289, 310, 325, 359, 375, 397, 427, 449, 473, 513, 532, 556, 591, 623, 644, 689, 711, 741, 788, 817, 841, 892, 920, 957 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A133331 A000741 A133205 this_sequence A143981 A031940 A007187` `Adjacent sequences: A049988 A049989 A049990 this_sequence A049992 A049993 A049994`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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