n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 8 |
3 | 15 |
4 | 120 |
5 | 274 |
6 | 2192 |
7 | 5531 |
8 | 44248 |
9 | 118686 |
10 | 949488 |
11 | 2654646 |
12 | 21237168 |
13 | 61189668 |
14 | 489517344 |
15 | 1443039123 |
16 | 11544312984 |
17 | 34648845862 |
18 | 277190766896 |
19 | 844131474530 |
20 | 6753051796240 |
21 | 20813234394492 |
22 | 166505875155936 |
23 | 518373091849502 |
[1,1,8,15,120,274,2192,5531,44248,118686,949488, 2654646,21237168,61189668,489517344,1443039123, 11544312984,34648845862,277190766896,844131474530, 6753051796240,20813234394492,166505875155936, 518373091849502] |