id:A072563 - OEIS Search Results

Search: id:A072563

Displaying 1-1 of 1 results found.

page 1

9*w(n) where : w(1)=w(2)=w(3)=1 w(n)=(w(n-1)*w(n-2)+(w(n-1)+w(n-2))/3) / w(n-3).

+0
1

9, 9, 9, 15, 23, 51, 93, 225, 429, 1059, 2039, 5055, 9753, 24201, 46713, 115935, 223799, 555459, 1072269, 2661345, 5137533, 12751251, 24615383, 61094895, 117939369, 292723209, 565081449, 1402521135, 2707467863, 6719882451 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`All terms are integers.`
	FORMULA	`lim n -> infinity a(n+1)/a(n) = (1/6) * ( 7 + sqrt(21) ) = 1.93042928249263...` `G.f.: x(15x^5+23x^4-39x^3-45x^2+9x+9)/(-x^6+6x^4-6x^2+1).`
	CROSSREFS	`Cf. A072881, A072557, A072560, A072561.` `Sequence in context: A068395 A144586 A141557 this_sequence A069602 A160761 A082049` `Adjacent sequences: A072560 A072561 A072562 this_sequence A072564 A072565 A072566`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 06 2002`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research