id:A118277 - OEIS Search Results

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Generalized 9-gonal numbers.

+0
2

0, 1, 6, 9, 19, 24, 39, 46, 66, 75, 100, 111, 141, 154, 189, 204, 244, 261, 306, 325, 375, 396, 451, 474, 534, 559, 624, 651, 721, 750, 825, 856, 936, 969, 1054, 1089, 1179, 1216, 1311, 1350, 1450, 1491, 1596, 1639, 1749, 1794, 1909, 1956, 2076, 2125, 2250 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`n(7n-5)/2 for positive and negative n`
	MATHEMATICA	`n=9; Union[Table[i((n-2)i-(n-4))/2, {i, -30, 30}]]`
	CROSSREFS	`Cf. A001106 (9-gonal numbers).` `Sequence in context: A086955 A078415 A023041 this_sequence A103186 A011988 A096546` `Adjacent sequences: A118274 A118275 A118276 this_sequence A118278 A118279 A118280`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Apr 21 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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