id:A116394 - OEIS Search Results

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Expansion of 1/((1+x)*sqrt(1-2x-3x^2)-x).

+0
2

1, 1, 4, 11, 33, 100, 305, 937, 2890, 8943, 27741, 86216, 268355, 836297, 2608818, 8144875, 25446229, 79545148, 248780979, 778400001, 2436380402, 7628211951, 23890103153, 74836927720, 234478937321, 734802907841, 2303073316042 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Diagonal sums of number triangle A116392.`
	FORMULA	`a(n)=sum{k=0..floor(n/2), A116392(n-k,k)}.`
	CROSSREFS	`Sequence in context: A149233 A034745 A099159 this_sequence A127154 A062460 A098324` `Adjacent sequences: A116391 A116392 A116393 this_sequence A116395 A116396 A116397`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 12 2006`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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