# A179277 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 6 4 19 5 50 6 158 7 492 8 1635 9 5466 10 18794 11 65332 12 230414 13 820052 14 2945436 15 10654808 16 38795523 17 142045610 18 522694866 19 1931912036 20 7169014298 21 26698782108 22 99756713732 23 373839656616 24 1404795235438 25 5292114330180