n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 0 |
5 | 0 |
6 | 40 |
7 | 0 |
8 | 153 |
9 | 558 |
10 | 3074 |
11 | 4285 |
12 | 22602 |
13 | 180544 |
14 | 766146 |
15 | 766082 |
16 | 524570 |
17 | 9932193 |
18 | 5193268 |
19 | 763601450 |
20 | 4284694240 |
21 | 3059999982 |
22 | 48742214702 |
23 | 6354126960 |
24 | 1975806716944 |
25 | 929707144775 |
[1,2,4,0,0,40,0,153,558,3074,4285,22602,180544, 766146,766082,524570,9932193,5193268,763601450, 4284694240,3059999982,48742214702,6354126960, 1975806716944,929707144775] |