%I A048577
%S A048577 3,4,6,9,14,22,35,56,90,145,234,378,611,988,1598,2585,4182,6766,10947,
               17712,
%T A048577 28658,46369,75026,121394,196419,317812,514230,832041,1346270,2178310,
               3524579,
%U A048577 5702888,9227466,14930353,24157818,39088170,63245987,102334156,165580142
%N A048577 Pisot sequence L(3,4).
%F A048577 a(n) = Fib(n+3)+1. a(n) = 2a(n-1) - a(n-3).
%F A048577 a(n)=1+[1/2+(1/2)*sqrt(5)]^n+(2/5)*[1/2+(1/2)*sqrt(5)]^n*sqrt(5)-(2/5)*sqrt(5)*[1/
               2-(1/2) *sqrt(5)]^n+[1/2-(1/2)*sqrt(5)]^n, with n>0=0 - Paolo P. 
               Lava (ppl(AT)spl.at), Jun 10 2008
%F A048577 a(n)=A020706(n-1), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), 
               Oct 15 2008]
%Y A048577 Subsequence of A001611. See A008776 for definitions of Pisot sequences.
%Y A048577 Sequence in context: A030712 A025000 A147790 this_sequence A107340 A018830 
               A102934
%Y A048577 Adjacent sequences: A048574 A048575 A048576 this_sequence A048578 A048579 
               A048580
%K A048577 nonn
%O A048577 0,1
%A A048577 David W. Wilson (davidwwilson(AT)comcast.net)