n | a(n) |
---|---|
0 | 1 |
1 | 648 |
2 | 70416 |
3 | 3116952 |
4 | 76117536 |
5 | 1202893992 |
6 | 13591279920 |
7 | 117561917880 |
8 | 818017823808 |
9 | 4752575891144 |
10 | 23727649169232 |
11 | 104129375982552 |
12 | 409027707560544 |
13 | 1459400559786216 |
14 | 4787137642562928 |
15 | 14581451741758968 |
16 | 41589736720488576 |
17 | 111867495074401032 |
18 | 285475524009208720 |
[1,648,70416,3116952,76117536,1202893992, 13591279920,117561917880,818017823808, 4752575891144,23727649169232,104129375982552, 409027707560544,1459400559786216,4787137642562928, 14581451741758968,41589736720488576, 111867495074401032,285475524009208720] |