# A351128 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 1
4 8
5 49
6 280
7 1649
8 10800
9 81505
10 696400
11 6472033
12 63562872
13 652984977
14 7026210728
15 79547049681
16 949709767904
17 11936248012993
18 157219119485216
19 2159448120457409
20 30811324011852136
21 455635009201780977
22 6975424580445456056
23 110478282815356437809