# A195186 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 20 5 72 6 290 7 1198 8 5452 9 25176 10 125874 11 637926 12 3448708 13 18919048 14 109412210 15 642798510 16 3945170012 17 24614491704 18 159328958690 19 1048645656646 20 7122719571700 21 49185991168968 22 349097516604738 23 2518145666958126 24 18609525157571692 25 139704193446510616