# A344054 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 8
4 64
5 540
6 4920
7 48720
8 524160
9 6108480
10 76809600
11 1037836800
12 15008716800
13 231437606400
14 3792255667200
15 65819609856000
16 1206547550208000
17 23297526540288000
18 472708591939584000
19 10055994967130112000
20 223826984752250880000
21 5202760944485744640000
22 126075414965721661440000
23 3179798058882852126720000
24 83346901966165164687360000
25 2267221868000212451328000000