| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 4 |
| 4 | 15 |
| 5 | 64 |
| 6 | 15 |
| 7 | 55 |
| 8 | 900 |
| 9 | 900 |
| 10 | 55 |
| 11 | 197 |
| 12 | 12100 |
| 13 | 44517 |
| 14 | 12100 |
| 15 | 197 |
| 16 | 695 |
| 17 | 155236 |
| 18 | 2059071 |
| 19 | 2059071 |
| 20 | 155236 |
| 21 | 695 |
| 22 | 2421 |
| 23 | 1932100 |
| 24 | 88808673 |
| 25 | 320575732 |
| 26 | 88808673 |
| 27 | 1932100 |
| 28 | 2421 |
| 29 | 8351 |
| 30 | 23444964 |
| 31 | 3660830427 |
| 32 | 45491100473 |
| 33 | 45491100473 |
[1,4,4,15,64,15,55,900,900,55,197,12100,44517, 12100,197,695,155236,2059071,2059071,155236,695, 2421,1932100,88808673,320575732,88808673,1932100, 2421,8351,23444964,3660830427,45491100473, 45491100473] |