n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 28 |
4 | 257 |
5 | 3129 |
6 | 46684 |
7 | 823800 |
8 | 16780345 |
9 | 387467173 |
10 | 10000823800 |
11 | 285328450956 |
12 | 8916487915429 |
13 | 302885107416053 |
14 | 11112292154008972 |
15 | 437902806868774804 |
16 | 18447046958816967669 |
17 | 827251374178490773149 |
18 | 39346845978103406350228 |
[1,1,4,28,257,3129,46684,823800,16780345, 387467173,10000823800,285328450956,8916487915429, 302885107416053,11112292154008972, 437902806868774804,18447046958816967669, 827251374178490773149,39346845978103406350228] |