id:A027993 - OEIS Search Results

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a(n) = 1*T(n,2n) + 2*T(n,2n-1) + ... + (2n+1)*T(n,0), T given by A027926.

+0
2

1, 6, 20, 54, 132, 306, 688, 1518, 3308, 7146, 15336, 32742, 69604, 147426, 311264, 655326, 1376220, 2883546, 6029272, 12582870, 26214356, 54525906, 113246160, 234880974, 486539212, 1006632906, 2080374728, 4294967238 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(n+5)*2^n - 2n - 4, a(0)=1. - R. Stephan, Mar 25 2004`
	CROSSREFS	`Cf. A047860.` `Sequence in context: A055909 A036596 A038091 this_sequence A028492 A059822 A109903` `Adjacent sequences: A027990 A027991 A027992 this_sequence A027994 A027995 A027996`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified September 5 17:15 EDT 2008. Contains 143476 sequences.

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