# A126925 (b-file synthesized from sequence entry)
0 1
1 35
2 630
3 7770
4 73815
5 575750
6 3838100
7 22476335
8 117954690
9 563148425
10 2474804920
11 10104887030
12 38627417045
13 139109930330
14 474457166470
15 1539358947805
16 4769099668900
17 14155140694835
18 40366668119890
19 110883904213950
20 294062886619075
21 754451625256210