# A173249 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 6
4 22
5 147
6 1443
7 18250
8 280394
9 5063363
10 105063363
11 2463011054
12 64380375278
13 1856540769315
14 58550453144611
15 2004745521503986
16 74062339559431922
17 2936485391069247715
18 124376016487663499491