The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 1 |
| 6 | 10 |
| 7 | 1 |
| 8 | 1 |
| 9 | 70 |
| 10 | 117 |
| 11 | 36 |
| 12 | 1 |
| 13 | 1 |
| 14 | 4006 |
| 15 | 1 |
| 16 | 1 |
| 17 | 80518 |
| 18 | 264500 |
| 19 | 442791 |
| 20 | 451206 |
| 21 | 178939 |
| 22 | 80092 |
| 23 | 6728 |
| 24 | 1 |
| 25 | 1 |
| 26 | 158753814 |
| 27 | 1 |
| 28 | 7157114189 |
[1,1,2,1,1,10,1,1,70,117,36,1,1,4006,1,1,80518, 264500,442791,451206,178939,80092,6728,1,1, 158753814,1,7157114189] |