A144312 - OEIS

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A144312

5*n*(5*n+1)/2.

0, 15, 55, 120, 210, 325, 465, 630, 820, 1035, 1275, 1540, 1830, 2145, 2485, 2850, 3240, 3655, 4095, 4560, 5050, 5565, 6105, 6670, 7260, 7875, 8515, 9180, 9870, 10585, 11325, 12090, 12880, 13695, 14535, 15400, 16290, 17205, 18145, 19110, 20100 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`a(n) = A000217(5*n).`
	FORMULA	`a(n)=a(n-1)+25*n-10 (with a(0)=0) [From Vincenzo Librandi, Nov 25 2010]`
	CROSSREFS	`A014105, A081266, A033585.` `Sequence in context: A043192 A043972 A179741 * A062025 A172436 A119134` `Adjacent sequences: A144309 A144310 A144311 * A144313 A144314 A144315`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 17 2008`

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Last modified February 16 04:17 EST 2012. Contains 205860 sequences.