1,2

a(n)=((1+Sqrt(17))^n-(1-Sqrt(17))^n)/(2Sqrt(17))

a(n+1)=2a(n)+16a(n-1) a(1)=1,a(2)=2

Sequence in context: A136905 A003283 A135188 this_sequence A098077 A063663 A071253

Adjacent sequences: A161004 A161005 A161006 this_sequence A161008 A161009 A161010

nonn

Sture Sjoestedt (sture.sjostedt(AT)spray.se), Jun 02 2009