n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 50 |
4 | 376 |
5 | 3124 |
6 | 27804 |
7 | 260496 |
8 | 2539616 |
9 | 25556330 |
10 | 263922884 |
11 | 2785341186 |
12 | 29948035032 |
13 | 327315887046 |
14 | 3630399545244 |
15 | 40813503158790 |
16 | 464662514679168 |
17 | 5354222585965310 |
18 | 62419468527625408 |
19 | 736098528973804246 |
20 | 8781173950238637928 |
21 | 105987886325647341056 |
[1,2,8,50,376,3124,27804,260496,2539616,25556330, 263922884,2785341186,29948035032,327315887046, 3630399545244,40813503158790,464662514679168, 5354222585965310,62419468527625408, 736098528973804246,8781173950238637928, 105987886325647341056] |