A014640 - OEIS

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A014640

Even heptagonal numbers (A000566).

0, 18, 34, 112, 148, 286, 342, 540, 616, 874, 970, 1288, 1404, 1782, 1918, 2356, 2512, 3010, 3186, 3744, 3940, 4558, 4774, 5452, 5688, 6426, 6682, 7480, 7756, 8614, 8910, 9828, 10144, 11122, 11458, 12496, 12852, 13950, 14326, 15484, 15880, 17098, 17514, 18792 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`G.f.:-2x(2x^3+21x^2+8x+9)/((x+1)^2(x-1)^3) [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 11 2009]`
	CROSSREFS	`Cf. A000566, A014637, A014773, A014792.` `Sequence in context: A190150 A044063 A044444 * A160844 A040306 A073332` `Adjacent sequences: A014637 A014638 A014639 * A014641 A014642 A014643`
	KEYWORD	`nonn`
	AUTHOR	`Mohammad K. Azarian (ma3(AT)evansville.edu)`
	EXTENSIONS	`Extended and description corrected by Patrick De Geest (pdg(AT)worldofnumbers.com)`

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.