n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 8 |
3 | 63 |
4 | 668 |
5 | 7850 |
6 | 115914 |
7 | 1847286 |
8 | 34031024 |
9 | 682177464 |
10 | 15049816200 |
11 | 357564279600 |
12 | 9212847784392 |
13 | 252552128708568 |
14 | 7395084613746816 |
15 | 229412209982127480 |
16 | 7524339637608261120 |
17 | 259675490280634374720 |
18 | 9418707076419411194304 |
19 | 357606237255136232451264 |
[1,1,8,63,668,7850,115914,1847286,34031024, 682177464,15049816200,357564279600,9212847784392, 252552128708568,7395084613746816, 229412209982127480,7524339637608261120, 259675490280634374720,9418707076419411194304, 357606237255136232451264] |