# A020115 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 19
5 90
6 524
7 3599
8 28342
9 251532
10 2483878
11 27012164
12 320769441
13 4129906549
14 57302453361
15 852373993745
16 13531437150693
17 228343001917932
18 4081631159283028
19 77040788131467136
20 1531185664112909315