# A370509 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 28
5 138
6 818
7 5658
8 44784
9 399366
10 3962256
11 43289760
12 516432984
13 6679346280
14 93091875120
15 1390851720840
16 22175338353120
17 375794883339120
18 6745177713093840
19 127830886641354960
20 2550687440585679360
21 53451172032327664560
22 1173650135526055272960