n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2340 |
3 | 26880 |
4 | 198510 |
5 | 752640 |
6 | 2777320 |
7 | 6666240 |
8 | 18056580 |
9 | 34222080 |
10 | 76790952 |
11 | 126124800 |
12 | 251743800 |
13 | 373201920 |
14 | 684788880 |
15 | 946636800 |
16 | 1632682350 |
17 | 2136207360 |
18 | 3505616460 |
19 | 4398078720 |
20 | 6969644136 |
21 | 8433039360 |
22 | 12913865640 |
23 | 15239485440 |
24 | 22786814120 |
[1,0,2340,26880,198510,752640,2777320,6666240, 18056580,34222080,76790952,126124800,251743800, 373201920,684788880,946636800,1632682350, 2136207360,3505616460,4398078720,6969644136, 8433039360,12913865640,15239485440,22786814120] |