n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 28 |
4 | 116 |
5 | 468 |
6 | 2004 |
7 | 8580 |
8 | 37700 |
9 | 166612 |
10 | 746420 |
11 | 3364964 |
12 | 15297508 |
13 | 69924788 |
14 | 321492948 |
15 | 1484809668 |
16 | 6887663748 |
17 | 32068609428 |
18 | 149827726068 |
19 | 702154578468 |
20 | 3299912205348 |
21 | 15548337659508 |
22 | 73433355989268 |
23 | 347572725355908 |
[1,2,8,28,116,468,2004,8580,37700,166612,746420, 3364964,15297508,69924788,321492948,1484809668, 6887663748,32068609428,149827726068,702154578468, 3299912205348,15548337659508,73433355989268, 347572725355908] |