n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 12 |
3 | 49 |
4 | 409 |
5 | 2596 |
6 | 18321 |
7 | 124177 |
8 | 854764 |
9 | 5849089 |
10 | 40115241 |
11 | 274888516 |
12 | 1884285217 |
13 | 12914634529 |
14 | 88519396044 |
15 | 606717892561 |
16 | 4158514347961 |
17 | 28502860300132 |
18 | 195361565985969 |
19 | 1339027949145649 |
20 | 9177834477168556 |
21 | 62905812346085281 |
22 | 431162854681140297 |
[1,1,12,49,409,2596,18321,124177,854764,5849089, 40115241,274888516,1884285217,12914634529, 88519396044,606717892561,4158514347961, 28502860300132,195361565985969,1339027949145649, 9177834477168556,62905812346085281, 431162854681140297] |