id:A153793 - OEIS Search Results

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13 times pentagonal numbers: 13n(3n-1)/2.

+0
2

0, 13, 65, 156, 286, 455, 663, 910, 1196, 1521, 1885, 2288, 2730, 3211, 3731, 4290, 4888, 5525, 6201, 6916, 7670, 8463, 9295, 10166, 11076, 12025, 13013, 14040, 15106, 16211, 17355, 18538, 19760, 21021, 22321, 23660, 25038, 26455 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = (39n^2 - 13n)/2 = A000326(n)*13.`
	CROSSREFS	`Cf. A000326, A153792.` `Sequence in context: A054477 A010820 A022705 this_sequence A067160 A147067 A147075` `Adjacent sequences: A153790 A153791 A153792 this_sequence A153794 A153795 A153796`
	KEYWORD	`easy,nonn`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Jan 01 2009`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research