# A201368 (b-file synthesized from sequence entry) 0 1 1 5 2 30 3 230 4 2280 5 28280 6 421680 7 7336880 8 145879680 9 3263031680 10 81097294080 11 2217097729280 12 66122900014080 13 2136392343342080 14 74335250629908480 15 2771225281718343680 16 110198981079416340480 17 4655992415884353044480 18 208291013498682750074880 19 9835804726301090178990080