id:A117266 - OEIS Search Results

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Row sums of triangle A117265.

+0
2

1, 2, 6, 37, 497, 14033, 813857, 95996993, 22913626241, 11034472530177, 10699863490757121, 20863301244829828097, 81721932792141693585409, 642577422892784159654154241, 10136733849914528413869372612609 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = Sum_{k=0..n} (2(n-k))!/((n-k)!(n-k)!)2^((n-k)(n+k-3)/2)).`
	PROGRAM	`(PARI) a(n)=sum(k=0, n, (2(n-k))!/((n-k)!(n-k)!)2^((n-k)(n+k-3)/2))`
	CROSSREFS	`Sequence in context: A014052 A014056 A113375 this_sequence A013033 A027322 A085447` `Adjacent sequences: A117263 A117264 A117265 this_sequence A117267 A117268 A117269`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Mar 14 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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