# A151426 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 25 5 85 6 291 7 1072 8 3949 9 15143 10 58563 11 231111 12 922494 13 3724920 14 15196256 15 62498021 16 259151683 17 1081560013 18 4542825176 19 19184568461 20 81432735810 21 347241072470 22 1486943756676 23 6392073797253 24 27576360268882 25 119363438165113 26 518246264053763 27 2256543142841418 28 9851632109402192