# A222204 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 18
4 54
5 1140
6 13903
7 99051
8 13049563
9 360783593
10 6044482889
11 4738211572702
12 303872744726644
13 11986520595161863
14 54755153078468134960
15 8217125138015950451626
16 764291947227525464744293
17 20119942924108379011391597989
18 7095967027221343377167292602835
19 1558052539448513320447263528275071