# A012157 (b-file synthesized from sequence entry) 0 1 1 1 2 17 3 673 4 48929 5 5673089 6 961574833 7 224363899425 8 68975480890433 9 27023130631305217 10 13143522467110047569 11 7770835407698957687457 12 5488724780305016514749281 13 4564763996367746354642156161