n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 6 |
4 | 36 |
5 | 15 |
6 | 666 |
7 | 28 |
8 | 2080 |
9 | 378 |
10 | 5050 |
11 | 66 |
12 | 1493856 |
13 | 91 |
14 | 19306 |
15 | 25425 |
16 | 524800 |
17 | 153 |
18 | 17009028 |
19 | 190 |
20 | 32004000 |
21 | 97461 |
22 | 117370 |
23 | 276 |
24 | 55037822976 |
25 | 7875 |
26 | 228826 |
27 | 266085 |
28 | 240956128 |
29 | 435 |
30 | 328050405000 |
[1,3,6,36,15,666,28,2080,378,5050,66,1493856,91, 19306,25425,524800,153,17009028,190,32004000, 97461,117370,276,55037822976,7875,228826,266085, 240956128,435,328050405000] |