id:A159035 - OEIS Search Results

Search: id:A159035

Displaying 1-1 of 1 results found.

page 1

a(0)=1=a(1), a(2)=2, a(3)=5; thereafter a(n+3)=4*a(n+2)-4*a(n+1)+2*a(n) for n>=1.

+0
2

1, 1, 2, 5, 14, 40, 114, 324, 920, 2612, 7416, 21056, 59784, 169744, 481952, 1368400, 3885280, 11031424, 31321376, 88930368, 252498816, 716916544, 2035531648, 5779458048, 16409538688, 46591385856, 132286304768, 375598753024 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`A117189 prefixed by an initial 1; essentially a duplicate. - N. J. A. Sloane and R. J. Mathar, Apr 07 2009`
	FORMULA	`G.f.: f(z)=((1-3z+2z^2-z^3)/(1-4z+4z^2-2*z^3))`
	CROSSREFS	`Sequence in context: A081908 A059505 A117189 this_sequence A052963 A036908 A126220` `Adjacent sequences: A159032 A159033 A159034 this_sequence A159036 A159037 A159038`
	KEYWORD	`easy,nonn`
	AUTHOR	`Richard Choulet (richardchoulet(AT)yahoo.fr), Apr 03 2009`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research