# A371523 (b-file synthesized from sequence entry)
0 1
1 2
2 15
3 142
4 1533
5 17924
6 220936
7 2827218
8 37202580
9 500228562
10 6842899886
11 94931338876
12 1332438761910
13 18887047322030
14 269986427261981
15 3887654399820062
16 56337997080499605
17 821021578186212094
18 12024687038651388155
19 176900548019426869808
20 2612917215947948178941