# A104137 (b-file synthesized from sequence entry)
1 4
2 8
3 18
4 126
5 380
6 4112
7 14310
8 184410
9 9272780
10 34669602
11 1857545300
12 26818405352
13 102282248574
14 1497215711538
15 84973644983780
16 4885261149611790
17 18900353608280300
18 1101298162244236182
19 16628051030379615882