n | a(n) |
---|---|
1 | 4 |
2 | 31 |
3 | 225 |
4 | 1563 |
5 | 10222 |
6 | 63030 |
7 | 374264 |
8 | 2160300 |
9 | 12196405 |
10 | 67724342 |
11 | 371233523 |
12 | 2014305995 |
13 | 10841722966 |
14 | 57974736592 |
15 | 308361428628 |
16 | 1632877406997 |
[4,31,225,1563,10222,63030,374264,2160300, 12196405,67724342,371233523,2014305995, 10841722966,57974736592,308361428628, 1632877406997] |