# A155628 (b-file synthesized from sequence entry)
0 1
1 4
2 34
3 280
4 2146
5 15784
6 113554
7 807160
8 5699266
9 40091464
10 281426674
11 1973132440
12 13824509986
13 96821901544
14 677954637394
15 4746487768120
16 33228635602306
17 232613334118024
18 1628344878433714
19 11398620307466200