id:A083885 - OEIS Search Results

Search: id:A083885

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A sum of decreasing powers.

+0
2

1, 1, 6, 16, 72, 256, 1056, 4096, 16512, 65536, 262656, 1048576, 4196352, 16777216, 67117056, 268435456, 1073774592, 4294967296, 17180000256, 68719476736, 274878431232, 1099511627776, 4398048608256, 17592186044416, 70368752566272 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Binomial transform of A083884.`
	FORMULA	`a(n)=(4^n+2^n+0^n+(-2)^n)/4; G.f.: (4x^3-2x^2-3x+1)/((2x+1)(2x-1)(4x-1)); E.g.f.: exp(4x)+exp(2x)+exp(0)+exp(-2x).` `A007814(a(n)) = A022998(n-1). - R. Stephan, Feb 14 2004`
	CROSSREFS	`Sequence in context: A128243 A118640 A142704 this_sequence A009352 A056204 A091148` `Adjacent sequences: A083882 A083883 A083884 this_sequence A083886 A083887 A083888`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 09 2003`

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

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