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) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 6 |
| 8 | 8 |
| 9 | 121 |
| 10 | 171 |
| 11 | 242 |
| 12 | 292 |
| 13 | 16561 |
| 14 | 65656 |
| 15 | 2137312 |
| 16 | 4602064 |
| 17 | 6597956 |
| 18 | 6958596 |
| 19 | 9470749 |
| 20 | 61255216 |
| 21 | 230474032 |
| 22 | 466828664 |
| 23 | 485494584 |
| 24 | 638828836 |
| 25 | 657494756 |
| 26 | 858474858 |
| 27 | 25699499652 |
| 28 | 40130703104 |
| 29 | 45862226854 |