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 | 1 |
| 2 | 12 |
| 3 | 125 |
| 4 | 1262 |
| 5 | 12649 |
| 6 | 126560 |
| 7 | 1265769 |
| 8 | 12658098 |
| 9 | 126581965 |
| 10 | 1265822028 |
| 11 | 12658226021 |
| 12 | 126582274070 |
| 13 | 1265822774161 |
| 14 | 12658227822392 |
| 15 | 126582278418945 |
| 16 | 1265822784660282 |
| 17 | 12658227847739509 |
| 18 | 126582278480139300 |