# A018193 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 11
5 69
6 602
7 6531
8 84737
9 1271143
10 21623667
11 411133711
12 8639077230
13 198801435313
14 4972210166209
15 134299831740091
16 3895950849227855
17 120808412263797173
18 3987662458459383826
19 139598735205063044939