# A163189 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 40 6 159 7 812 8 5133 9 42942 10 474619 11 6708142 12 121367878 13 2819170132 14 83571532538 15 3148951107867 16 151069353323782 17 9219463980803329 18 714951048370178409 19 70448496563603216429 20 8818161368662624534857