A110113 - OEIS

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A110113

Diagonal sums of A083856.

0, 1, 2, 3, 5, 9, 17, 34, 71, 154, 346, 802, 1914, 4693, 11800, 30379, 79963, 214925, 589223, 1645994, 4681037, 13541446, 39817560, 118925810, 360577616, 1109158545, 3459636358, 10936941299, 35026082521, 113588037953 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Sums of antidiagonals of A083856.`
	FORMULA	`a(n)=sum{k=0..n, ((1+sqrt(4(k-n)+1))/2)^n/sqrt(4(k-n)+1)-((1-sqrt(4(k-n)+1))/2)^n/sqrt(4(k-n)+1)}`
	CROSSREFS	`Sequence in context: A061902 A166286 A179807 * A137155 A014227 A064769` `Adjacent sequences: A110110 A110111 A110112 * A110114 A110115 A110116`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 12 2005`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.