id:A016790 - OEIS Search Results

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(3n+2)^2.

+0
1

4, 25, 64, 121, 196, 289, 400, 529, 676, 841, 1024, 1225, 1444, 1681, 1936, 2209, 2500, 2809, 3136, 3481, 3844, 4225, 4624, 5041, 5476, 5929, 6400, 6889, 7396, 7921, 8464, 9025, 9604, 10201, 10816, 11449 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`If Y is a fixed 2-subset of a (3n+1)-set X then a(n-1) is the number of 3-subsets of X intersecting Y. - Milan R. Janjic (agnus(AT)blic.net), Oct 21 2007`
	LINKS	`Milan Janjic, Two Enumerative Functions`
	CROSSREFS	`Adjacent sequences: A016787 A016788 A016789 this_sequence A016791 A016792 A016793` `Sequence in context: A089767 A135784 A131069 this_sequence A065733 A077205 A125309`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

AT&T Labs Research