-636925domain: ZAppears in sequencesRiordan array (1/(1+xc(-2x)), xc(-2x)/(1+xc(-2x))), c(x) the g.f. of A000108.at n=45A114189Expansion of 1/(1+x*c(-2*x)), c(x) the g.f. of A000108.at n=9A114191