n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 48 |
3 | 264 |
4 | 1408 |
5 | 7432 |
6 | 39152 |
7 | 206600 |
8 | 1093760 |
9 | 5813000 |
10 | 31019568 |
11 | 166188552 |
12 | 893763840 |
13 | 4823997960 |
14 | 26124870640 |
15 | 141926904328 |
16 | 773293020928 |
17 | 4224773978632 |
18 | 23139861329456 |
19 | 127039971696392 |
20 | 698993630524032 |
21 | 3853860616119048 |
22 | 21288789223825648 |
[1,8,48,264,1408,7432,39152,206600,1093760, 5813000,31019568,166188552,893763840,4823997960, 26124870640,141926904328,773293020928, 4224773978632,23139861329456,127039971696392, 698993630524032,3853860616119048, 21288789223825648] |