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 | 7 |
| 2 | 127 |
| 3 | 1685 |
| 4 | 20676 |
| 5 | 220235 |
| 6 | 2093467 |
| 7 | 17892539 |
| 8 | 139164323 |
| 9 | 993947185 |
| 10 | 6572368601 |
| 11 | 40512935649 |
| 12 | 234192144667 |
| 13 | 1276154088792 |
| 14 | 6584891361478 |
| 15 | 32302298031855 |
| 16 | 151176059240006 |