# A007743 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 6 5 17 6 58 7 191 8 700 9 2515 10 9623 11 36552 12 143761 13 564443 14 2259905 15 9057278 16 36705846 17 149046429 18 609246350 19 2495727647 20 10267016450 21 42322763940 22 174974139365