n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 1 |
4 | 6 |
5 | 4 |
6 | 1 |
7 | 24 |
8 | 210 |
9 | 8 |
10 | 1 |
11 | 120 |
12 | 332640 |
13 | 32760 |
14 | 16 |
15 | 1 |
16 | 720 |
17 | 29059430400 |
18 | 19275223968000 |
19 | 20389320 |
20 | 32 |
21 | 1 |
22 | 5040 |
23 | 223016017416192000 |
24 | 1250004633476421848894668800000 |
25 | 28844656968251942737920000 |
26 | 48920775120 |
27 | 64 |
[1,1,2,1,6,4,1,24,210,8,1,120,332640,32760,16,1, 720,29059430400,19275223968000,20389320,32,1,5040, 223016017416192000, 1250004633476421848894668800000, 28844656968251942737920000,48920775120,64] |