id:A014112 - OEIS Search Results

Search: id:A014112

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n*(n-1)+(n-2)*(n-3)+...+1.

+0
1

1, 2, 7, 14, 27, 44, 69, 100, 141, 190, 251, 322, 407, 504, 617, 744, 889, 1050, 1231, 1430, 1651, 1892, 2157, 2444, 2757, 3094, 3459, 3850, 4271, 4720, 5201, 5712, 6257, 6834, 7447, 8094, 8779, 9500, 10261, 11060, 11901, 12782, 13707, 14674, 15687 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = a(n-2) + n(n-1).` `G.f.:(1-x^3+3x^2-x)/((x+1)*(x-1)^4) [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 10 2009]`
	CROSSREFS	`Sequence in context: A119354 A088207 A102999 this_sequence A068040 A005998 A122751` `Adjacent sequences: A014109 A014110 A014111 this_sequence A014113 A014114 A014115`
	KEYWORD	`nonn,easy`
	AUTHOR	`Jonathan Wild (jon(AT)music.mcgill.ca)`
	EXTENSIONS	`More terms from Erich Friedman (erich.friedman(AT)stetson.edu).`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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