n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 56 |
3 | 392 |
4 | 2744 |
5 | 19208 |
6 | 134456 |
7 | 941192 |
8 | 6588344 |
9 | 46118408 |
10 | 322828856 |
11 | 2259801992 |
12 | 15818613944 |
13 | 110730297608 |
14 | 775112083256 |
15 | 5425784582792 |
16 | 37980492079544 |
17 | 265863444556808 |
18 | 1861044111897656 |
19 | 13027308783283592 |
20 | 91191161482985144 |
21 | 638338130380896008 |
[1,8,56,392,2744,19208,134456,941192,6588344, 46118408,322828856,2259801992,15818613944, 110730297608,775112083256,5425784582792, 37980492079544,265863444556808,1861044111897656, 13027308783283592,91191161482985144, 638338130380896008] |