# A037598 (b-file synthesized from sequence entry)
1 1
2 8
3 40
4 201
5 1008
6 5040
7 25201
8 126008
9 630040
10 3150201
11 15751008
12 78755040
13 393775201
14 1968876008
15 9844380040
16 49221900201
17 246109501008
18 1230547505040
19 6152737525201
20 30763687626008
21 153818438130040
22 769092190650201