# A064230 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 9
5 6
6 1
7 49
8 288
9 174
10 1
11 225
12 6750
13 36000
14 22560
15 1
16 961
17 118800
18 3159750
19 17760600
20 12514320
21 1
22 3969
23 1807806
24 190071000
25 5295204600
26 34395777360
27 28836612000
28 1
29 16129
30 25316928
31 9271660734
32 1001080231200
33 32307576315840