id:A100256 - OEIS Search Results

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Squares of second pentagonal numbers: (1/4) n^2(3n+1)^2.

+0
2

0, 4, 49, 225, 676, 1600, 3249, 5929, 10000, 15876, 24025, 34969, 49284, 67600, 90601, 119025, 153664, 195364, 245025, 303601, 372100, 451584, 543169, 648025, 767376, 902500, 1054729, 1225449, 1416100, 1628176, 1863225, 2122849 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`L. Euler, De mirabilibus proprietatibus numerorum pentagonalium, par. 29` `L. Euler, On the remarkable properties of the pentagonal numbers`
	CROSSREFS	`Equals A005449(n)^2. Cf. A100255.` `Adjacent sequences: A100253 A100254 A100255 this_sequence A100257 A100258 A100259` `Sequence in context: A092866 A078187 A041065 this_sequence A000596 A113525 A064751`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan, Nov 13 2004`

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

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