55372668156domain: NAppears in sequencesExpansion of (1+2*x+x^2)/(1-34*x+x^2).at n=7A004294Numbers k such that 2*k^2 + 9 is a square.at n=14A075848Expansion of (1 +4*x -x^2)/((1-x^2)*(1-2*x-x^2)); a Pellian-related sequence.at n=27A114689