# A375505 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 25 5 136 6 923 7 7557 8 72767 9 807896 10 10180274 11 143741731 12 2250285510 13 38715864581 14 726596076239 15 14780041925011 16 324070919795226 17 7622475922806634 18 191515981769983447 19 5120787153821434468 20 145222986971201544125 21 4355043425181710241819 22 137728970544635824065325