# A368892 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 28
4 264
5 3200
6 47521
7 835569
8 16974208
9 391147867
10 10080150040
11 287244283821
12 8967781893889
13 304393809948904
14 11160668048222588
15 439582708115133751
16 18509867068477014112
17 829768603643818659302
18 39454459640462073466945