n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 24 |
4 | 720 |
5 | 6300 |
6 | 34812 |
7 | 135552 |
8 | 436944 |
9 | 1198968 |
10 | 2929656 |
11 | 6516984 |
12 | 13502448 |
13 | 26208516 |
14 | 48407988 |
15 | 85481280 |
16 | 145200888 |
17 | 238502808 |
18 | 380729160 |
19 | 591761304 |
20 | 899049096 |
21 | 1336994100 |
22 | 1950873276 |
23 | 2798226336 |
24 | 3952174032 |
25 | 5500597632 |
26 | 7555866072 |
27 | 10253438688 |
[0,0,24,720,6300,34812,135552,436944,1198968, 2929656,6516984,13502448,26208516,48407988, 85481280,145200888,238502808,380729160,591761304, 899049096,1336994100,1950873276,2798226336, 3952174032,5500597632,7555866072,10253438688] |