94347526144domain: NAppears in sequencesa(n) = ((1+sqrt(13))^n + (1-sqrt(13))^n)/2.at n=17A125816Sequence arising from the factorization of F(n)= A091914(n-1) and L(n)= A127262. F(0)=0, F(1)=1, F(n)=2*F(n-1)+12*F(n-2), L(0)=2, L(1)=2, L(n)=2*L(n-1)+12*L(n-2).at n=16A127609