# A371543 (b-file synthesized from sequence entry)
0 1
1 4
2 18
3 100
4 611
5 3964
6 26796
7 186664
8 1330541
9 9657748
10 71138964
11 530417668
12 3995461515
13 30359913132
14 232434013174
15 1791205897652
16 13883372595753
17 108159238126644
18 846472588860134
19 6651825146945508
20 52465622957295300
21 415208597109815172