# A155633 (b-file synthesized from sequence entry)
0 1
1 10
2 60
3 340
4 1920
5 10900
6 62280
7 358060
8 2070240
9 12030820
10 70231800
11 411625180
12 2420922960
13 14281397140
14 84467679720
15 500702562700
16 2973697798080
17 17689598897860
18 105374653934040
19 628433226338620