# A095152 (b-file synthesized from sequence entry)
2 1
3 32
4 321
5 2560
6 18881
7 135072
8 954241
9 6705920
10 47020161
11 329377312
12 2306349761
13 16146574080
14 113032395841
15 791245902752
16 5538778714881
17 38771623191040
18 271401878897921
19 1899814701967392
20 13298707562817601
21 93090966886860800
22 651636810049438401