# A191810 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 8
4 44
5 305
6 2521
7 24389
8 273990
9 3569531
10 53944055
11 944215131
12 19065096323
13 441174226355
14 11609627641798
15 344702951590401
16 11463058468995522
17 424180616752269732
18 17366249924363207650
19 782666399665891947949