id:A092055 - OEIS Search Results

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A092055

C(2+2^n,3).

+0
2

1, 4, 20, 120, 816, 5984, 45760, 357760, 2829056, 22500864, 179481600, 1433753600, 11461636096, 91659526144, 733141975040, 5864598896640, 46914643623936, 375308558925824, 3002434111406080, 24019335451770880, 192154133857304576 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) =(2^(3n-1) +32^(2n-1) + 2^n)/3 =A092056(3, n) =A007581(n)A000079(n) =2*a(n-1)+4^(n-1)+8^(n-1).`
	EXAMPLE	`a(5) = C(2+2^5,3) = C(34,3) = 5984`
	MAPLE	`seq(-binomial(-2^n, 3), n=0..20); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 22 2008`
	CROSSREFS	`Sequence in context: A089498 A046729 A093123 this_sequence A001715 A020028 A020118` `Adjacent sequences: A092052 A092053 A092054 this_sequence A092056 A092057 A092058`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Feb 19 2004`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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