# A113882 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 64
5 605
6 6996
7 94556
8 1452928
9 24921765
10 471091360
11 9720039120
12 217285778700
13 5230874655578
14 134929133296972
15 3713182459524270
16 108605754921052880
17 3364866315332574493
18 110099293819641466488
19 3794219154973411079432
20 137375263325254329836460