# A143805 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 36 5 250 6 2229 7 24656 8 329883 9 5233837 10 96907908 11 2066551242 12 50196458429 13 1375782397859 14 42203985613593 15 1438854199059479 16 54180508061067099 17 2241000820010271224 18 101316373253530824771 19 4984697039955303538934 20 265819807417517749652933