id:A081587 - OEIS Search Results

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Third row of Pascal-(1,4,1) array A081579.

+0
3

1, 11, 46, 106, 191, 301, 436, 596, 781, 991, 1226, 1486, 1771, 2081, 2416, 2776, 3161, 3571, 4006, 4466, 4951, 5461, 5996, 6556, 7141, 7751, 8386, 9046, 9731, 10441, 11176, 11936, 12721, 13531, 14366, 15226, 16111, 17021, 17956, 18916, 19901 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=(2-5n+25n^2)/2. G.f. (1+4x)^2/(1-x)^3.`
	CROSSREFS	`Cf. A016861, A081588.` `Sequence in context: A110114 A116193 A063158 this_sequence A006324 A126672 A033209` `Adjacent sequences: A081584 A081585 A081586 this_sequence A081588 A081589 A081590`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 23 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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