# A003495 (b-file synthesized from sequence entry)
0 1
1 12
2 132
3 1392
4 14292
5 144000
6 1430592
7 14057280
8 136914804
9 1323843936
10 12722294736
11 121625850240
12 1157512059936
13 10972654675200
14 103654156958208
15 976153872234240
16 9167420099612340