n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 14 |
3 | 222 |
4 | 6384 |
5 | 291720 |
6 | 19445040 |
7 | 1781750880 |
8 | 214899027840 |
9 | 33007837322880 |
10 | 6290830003852800 |
11 | 1456812592995513600 |
12 | 402910665227270323200 |
13 | 131173228963370155161600 |
14 | 49656810289225281849907200 |
15 | 21628258853895305337293568000 |
16 | 10739534026001485514941587456000 |
[1,2,14,222,6384,291720,19445040,1781750880, 214899027840,33007837322880,6290830003852800, 1456812592995513600,402910665227270323200, 131173228963370155161600, 49656810289225281849907200, 21628258853895305337293568000, 10739534026001485514941587456000] |