# A098817 (b-file synthesized from sequence entry)
1 2
2 18
3 72
4 780
5 228
6 852
7 228
8 1080
9 4020
10 25800
11 6012
12 40332
13 713502
14 332880
15 455892
16 6428118
17 4142652
18 173808