Expansion of (5-14*x+x^2)/((1-x)*(x^2-18*x+1)); relates squares of numerators and denominators of continued fraction convergents to sqrt(5).
5, 81, 1445, 25921, 465125, 8346321, 149768645, 2687489281, 48225038405
1 seqfan posts
Thu Nov 19 17:19:12 CET 2009 [seqfan] detective work related to Creighton Dement's "Floretions"