# A180720 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 53 5 1305 6 177559 7 247880897 8 9252468642944 9 39211218810149955871 10 155393322265527728403643204013 11 12102963126133848174768954972642433817636369