id:A080880 - OEIS Search Results

Search: id:A080880

Displaying 1-1 of 1 results found.

page 1

a(n)*a(n+3) - a(n+1)*a(n+2) = 2^n, given a(0)=1, a(1)=2, a(2)=2.

+0
7

1, 2, 2, 5, 6, 17, 22, 65, 86, 257, 342, 1025, 1366, 4097, 5462, 16385, 21846, 65537, 87382, 262145, 349526, 1048577, 1398102, 4194305, 5592406, 16777217, 22369622, 67108865, 89478486, 268435457, 357913942, 1073741825, 1431655766, 4294967297 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(2n)=(4^n+2)/3, a(2n+1)=4^n+1.` `G.f.: (-5x^3 - 3x^2 + 2x + 1)/(4x^4 - 5*x^2 + 1)`
	CROSSREFS	`Cf. A080876, A080877, A080878, A080879, A080881, A080882.` `Sequence in context: A098600 A034420 A028410 this_sequence A120843 A021447 A136536` `Adjacent sequences: A080877 A080878 A080879 this_sequence A080881 A080882 A080883`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Feb 22 2003`
	EXTENSIONS	`More terms from Ralf Stephan (ralf(AT)ark.in-berlin.de), Jul 25 2003`

page 1

Search completed in 0.002 seconds

Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research