id:A049987 - OEIS Search Results

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a(n)=number of arithmetic progressions of 4 or more positive integers, strictly increasing with sum <= n.

+0
1

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 3, 4, 4, 5, 5, 7, 8, 10, 10, 11, 13, 15, 16, 19, 19, 23, 23, 25, 26, 29, 33, 37, 37, 40, 41, 47, 47, 52, 52, 56, 62, 66, 66, 70, 72, 80, 82, 87, 87, 93, 99, 105, 107, 112, 112, 123, 123, 128, 133, 139 (list; graph; listen)

	OFFSET	`1,14`
	CROSSREFS	`Sequence in context: A081609 A046700 A110532 this_sequence A051898 A092032 A058222` `Adjacent sequences: A049984 A049985 A049986 this_sequence A049988 A049989 A049990`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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