id:A067589 - OEIS Search Results

Search: id:A067589

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Numbers n such that A067588(n) is an odd number.

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1, 5, 7, 15, 35, 51, 57, 77, 117, 145, 155, 187, 247, 287, 301, 345, 425, 477, 495, 551, 651, 715, 737, 805, 925, 1001, 1027, 1107, 1247, 1335, 1365, 1457, 1617, 1717, 1751, 1855, 2035, 2147, 2185, 2301, 2501, 2625, 2667, 2795, 3015, 3151, 3197, 3337 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`The terms are exactly the odd pentagonal numbers; that is, they are all the odd numbers of the form n(3n-1)/2 where n is an integer. - James A. Sellers (sellersj(AT)math.psu.edu), Jun 09 2007`
	CROSSREFS	`Cf. A067588, A000009.` `Adjacent sequences: A067586 A067587 A067588 this_sequence A067590 A067591 A067592` `Sequence in context: A072022 A003429 A076860 this_sequence A059613 A116048 A120282`
	KEYWORD	`easy,nonn`
	AUTHOR	`Naohiro Nomoto (n_nomoto(AT)yabumi.com), Jan 31 2002`
	EXTENSIONS	`Corrected by T. D. Noe (noe(AT)sspectra.com), Oct 25 2006`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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