# A207573 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 4 5 7 6 12 7 29 8 84 9 355 10 2038 11 15723 12 156920 13 1959177 14 29788564 15 539206155 16 11406258536 17 277708694711 18 7683630307352 19 239005572292955 20 8281900782667178 21 317172995786425445