# A149345 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 12 4 42 5 149 6 563 7 2167 8 8521 9 34010 10 137899 11 566278 12 2347387 13 9815176 14 41356830 15 175507147 16 749312195 17 3216195084 18 13872335903 19 60105398885 20 261496852724 21 1141895019478 22 5003444985964 23 21993343270089 24 96961107283936 25 428639320358383 26 1899717847605466 27 8439559063692215