# A287484 (b-file synthesized from sequence entry) 0 1 1 3 2 7 3 19 4 58 5 152 6 422 7 995 8 2359 9 6294 10 14507 11 36370 12 88198 13 187786 14 386993 15 840033 16 1901930 17 3851372 18 8088478 19 16388857 20 30001902 21 56613547 22 103229263 23 193020113 24 389750880 25 759988983 26 1359250012 27 2350842201 28 3737393021 29 5748044055 30 10843131073 31 19774152370