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 | 4 |
| 2 | 14 |
| 3 | 6 |
| 4 | 622 |
| 5 | 93 |
| 6 | 1211 |
| 7 | 69 |
| 8 | 15746 |
| 9 | 1273 |
| 10 | 844147 |
| 11 | 21 |
| 12 | 3786374 |
| 13 | 1357511 |
| 14 | 37008721 |
| 15 | 20028781 |
| 16 | 201010021 |
| 17 | 91186105 |
| 18 | 6969801571 |
| 19 | 224163661 |
| 20 | 518479039339 |
| 21 | 15633784177 |
| 22 | 8191197319811 |
| 23 | 83460915203 |
| 24 | 669094978066 |
| 25 | 691286884697 |