# A195262 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 21 4 125 5 805 6 5459 7 38403 8 277667 9 2050771 10 15405655 11 117344350 12 904175038 13 7035182178 14 55197856415 15 436221495843 16 3469249248383 17 27744896161177 18 222987118478532 19 1800106801933350 20 14589674016207940 21 118674224290447850 22 968474133792224994