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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 407 |
| 3 | 5501 |
| 4 | 67239 |
| 5 | 773589 |
| 6 | 8559679 |
| 7 | 92246077 |
| 8 | 975897527 |
| 9 | 10187458853 |
| 10 | 105306474351 |
| 11 | 1080536075853 |
| 12 | 11025196931815 |
| 13 | 112010922356917 |
| 14 | 1134181907272223 |
| 15 | 11454404794267229 |
| 16 | 115444750765761303 |
[1,25,407,5501,67239,773589,8559679,92246077, 975897527,10187458853,105306474351,1080536075853, 11025196931815,112010922356917,1134181907272223, 11454404794267229,115444750765761303] |