# A001773 (b-file synthesized from sequence entry) 1 3 2 7 3 23 4 287 5 291 6 795 7 2203 8 5711 9 7927 10 9443 11 10095 12 19071 13 29611 14 34651 15 51875 16 55343 17 77511 18 166303 19 233207