# A339524 (b-file synthesized from sequence entry) 1 0 2 1 3 1 4 2 5 3 6 8 7 18 8 49 9 120 10 313 11 802 12 2120 13 5591 14 14942 15 40033 16 108108 17 293094 18 798839 19 2185341 20 6002085 21 16538599 22 45716952 23 126727195 24 352215812 25 981268481 26 2739930091 27 7666333161 28 21491833976 29 60358490615 30 169798048026 31 478420333601