The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 23 |
| 2 | 335 |
| 3 | 3955 |
| 4 | 41391 |
| 5 | 401163 |
| 6 | 3691255 |
| 7 | 32746835 |
| 8 | 282966431 |
| 9 | 2398399003 |
| 10 | 20039831175 |
| 11 | 165661847715 |
| 12 | 1358507565871 |
| 13 | 11073172312043 |
| 14 | 89845493043095 |
| 15 | 726472924548595 |
| 16 | 5858783037195711 |
| 17 | 47156008120196283 |
[1,23,335,3955,41391,401163,3691255,32746835, 282966431,2398399003,20039831175,165661847715, 1358507565871,11073172312043,89845493043095, 726472924548595,5858783037195711, 47156008120196283] |