# A162368 (b-file synthesized from sequence entry) 0 1 1 26 2 350 3 3250 4 23399 5 139204 6 712179 7 3220074 8 13124124 9 48942894 10 168958960 11 544988210 12 1655019795 13 4761697020 14 13048465756 15 34209731996 16 86141195946 17 209025000936 18 490211005011 19 1113996801606 20 2458618650891 21 5280637344216