# A328522 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 12
4 60
5 180
6 1260
7 2520
8 27720
9 83160
10 1081080
11 3603600
12 61261200
13 698377680
14 3491888400
15 80313433200
16 240940299600
17 1686582097200
18 48910880818800
19 1516237305382800
20 3032474610765600
21 112201560598327200
22 3066842656354276800
23 131874234223233902400
24 659371171116169512000
25 30990445042459967064000