# A271215 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 4
4 24
5 184
6 1911
7 24252
8 362199
9 6162080
10 117342912
11 2469791336
12 56919388745
13 1425435420600
14 38543562608825
15 1119188034056244
16 34733368101580440
17 1147320305439301344
18 40190943859500501151
19 1488212241729974297796
20 58080468361734193793551