This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 81 |
| 2 | 6481 |
| 3 | 518481 |
| 4 | 41478481 |
| 5 | 3318278481 |
| 6 | 265462278481 |
| 7 | 21236982278481 |
| 8 | 1698958582278481 |
| 9 | 135916686582278481 |
| 10 | 10873334926582278481 |
| 11 | 869866794126582278481 |
| 12 | 69589343530126582278481 |
| 13 | 5567147482410126582278481 |
| 14 | 445371798592810126582278481 |