id:A045945 - OEIS Search Results

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Hexagonal matchstick numbers: 3n(3n+1).

+0
3

0, 12, 42, 90, 156, 240, 342, 462, 600, 756, 930, 1122, 1332, 1560, 1806, 2070, 2352, 2652, 2970, 3306, 3660, 4032, 4422, 4830, 5256, 5700, 6162, 6642, 7140, 7656, 8190, 8742, 9312, 9900, 10506, 11130, 11772, 12432, 13110, 13806, 14520, 15252, 16002 (list; graph; listen)

	OFFSET	`0,2`
	MAPLE	`a:=n->sum(n+1, j=1..n): seq(a(n*3), n=0..42); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 03 2007`
	CROSSREFS	`Cf. A033580, A045946.` `Sequence in context: A022672 A109275 A085798 this_sequence A005901 A090554 A009948` `Adjacent sequences: A045942 A045943 A045944 this_sequence A045946 A045947 A045948`
	KEYWORD	`nonn`
	AUTHOR	`R. K. Guy`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research