n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 1 |
4 | 6 |
5 | 36 |
6 | 1 |
7 | 16 |
8 | 90 |
9 | 400 |
10 | 1 |
11 | 50 |
12 | 784 |
13 | 1680 |
14 | 4900 |
15 | 1 |
16 | 168 |
17 | 8910 |
18 | 48400 |
19 | 34650 |
20 | 63504 |
21 | 1 |
22 | 588 |
23 | 113256 |
24 | 2011100 |
25 | 3312400 |
26 | 756756 |
27 | 853776 |
28 | 1 |
29 | 2112 |
30 | 1528436 |
31 | 96993024 |
32 | 503909070 |
33 | 240374016 |
34 | 17153136 |
35 | 11778624 |
36 | 1 |
37 | 7722 |
38 | 21395520 |
39 | 5056527000 |
40 | 92279796840 |
41 | 133954543800 |
42 | 18116083216 |
[1,1,4,1,6,36,1,16,90,400,1,50,784,1680,4900,1, 168,8910,48400,34650,63504,1,588,113256,2011100, 3312400,756756,853776,1,2112,1528436,96993024, 503909070,240374016,17153136,11778624,1,7722, 21395520,5056527000,92279796840,133954543800, 18116083216] |