id:A083335 - OEIS Search Results

Search: id:A083335

Displaying 1-1 of 1 results found.

page 1

a(n)=12a(n-2)-25a(n-4).

+0
2

1, 1, 7, 12, 59, 119, 533, 1128, 4921, 10561, 45727, 98532, 425699, 918359, 3965213, 8557008, 36940081, 79725121, 344150647, 742776252, 3206305739, 6920186999, 29871902693, 64472837688, 278305188841, 600669377281, 2592864698767 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`A083334(n)/a(n) converges to sqrt(11)`
	FORMULA	`G.f.: (1+x-5x^2)/(1-12x^2+25x^4)`
	MATHEMATICA	`CoefficientList[Series[(1+x-5x^2)/(1-12x^2+25x^4), {x, 0, 30}], x]`
	CROSSREFS	`Sequence in context: A113499 A108238 A038278 this_sequence A119179 A121983 A157808` `Adjacent sequences: A083332 A083333 A083334 this_sequence A083336 A083337 A083338`
	KEYWORD	`easy,nonn`
	AUTHOR	`Mario Catalani (mario.catalani(AT)unito.it), Apr 26 2003`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research