n | a(n) |
---|---|
6 | 3 |
7 | 32 |
8 | 225 |
9 | 1320 |
10 | 7007 |
11 | 34944 |
12 | 167076 |
13 | 775200 |
14 | 3517470 |
15 | 15690048 |
16 | 69052555 |
17 | 300638520 |
18 | 1297398375 |
19 | 5557977600 |
20 | 23663585880 |
21 | 100222246080 |
22 | 422559514170 |
23 | 1774647576000 |
24 | 7427639542050 |
25 | 30994292561232 |
26 | 128989359164358 |
[3,32,225,1320,7007,34944,167076,775200,3517470, 15690048,69052555,300638520,1297398375,5557977600, 23663585880,100222246080,422559514170, 1774647576000,7427639542050,30994292561232, 128989359164358] |