# A075515 (b-file synthesized from sequence entry) 0 1 1 45 2 1260 3 28350 4 563031 5 10333575 6 179866170 7 3016747800 8 49263275061 9 788796913905 10 12445575859080 11 194186867360850 12 3004103990159091 13 46168557763591035 14 705914973500103990 15 10750288516418083500