A124571 - OEIS

%I #2 Apr 30 2014 01:38:22

%S 1,1,1,3,4,6,12,21,33,53,90,151,253,426,701,1151,1900,3123,5162,8553,

%T 14092,23223,38296,62963,103458,170056,279140,457833,751033,1231671,

%U 2019090,3309710,5424315,8886249,14553015,23826952,38997232,63806394

%N Expansion of limit b(n)/x^n where b(n)=b(n-1)^2+b(n-1)*x, b(1)=x^2.

%o (PARI) {a(n)=local(A); if(n<1, 0, A=x+x*O(x^n); for(k=0, n-2, A+=A^2*x^k); polcoeff(A, n))}

%K nonn

%O 1,4

%A _Michael Somos_, Nov 04 2006