# A109926 (b-file synthesized from sequence entry)
0 1
1 3
2 4
3 15
4 21
5 45
6 75
7 465
8 1095
9 2145
10 4935
11 14955
12 80685
13 229845
14 1295325
15 1575285
16 9700575
17 20435415
18 15054105
19 53999715
20 2282745465