id:A027608 - OEIS Search Results

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Expansion of 1/((1-x)*(1-2x)^4).

+0
5

1, 9, 49, 209, 769, 2561, 7937, 23297, 65537, 178177, 471041, 1216513, 3080193, 7667713, 18808833, 45547521, 109051905, 258473985, 607125505, 1414529025, 3271557121, 7516192769, 17163091969 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = 1 + (n-1)2^(n+1) + ((n^3 - 7n + 6)*2^(n-1))/3. - Roger Voles, Dec 07 2004` `a(n) = A119258(n+4,n). - Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 11 2006`
	CROSSREFS	`Sequence in context: A020245 A082608 A058031 this_sequence A003297 A012248 A080026` `Adjacent sequences: A027605 A027606 A027607 this_sequence A027609 A027610 A027611`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

AT&T Labs Research