The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 423 |
| 3 | 6125 |
| 4 | 82103 |
| 5 | 1054725 |
| 6 | 13214671 |
| 7 | 163046125 |
| 8 | 1992333255 |
| 9 | 24194295125 |
| 10 | 292622085119 |
| 11 | 3529789897725 |
| 12 | 42504079369207 |
| 13 | 511221761969125 |
| 14 | 6144043634254767 |
| 15 | 73803583579040525 |
| 16 | 886243482821361959 |
[1,25,423,6125,82103,1054725,13214671,163046125, 1992333255,24194295125,292622085119,3529789897725, 42504079369207,511221761969125,6144043634254767, 73803583579040525,886243482821361959] |