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 | 26 |
| 2 | 676 |
| 3 | 6186 |
| 4 | 52821 |
| 5 | 507682 |
| 6 | 4503765 |
| 7 | 38542393 |
| 8 | 334331082 |
| 9 | 2885233676 |
| 10 | 24682262700 |
| 11 | 211197852495 |
| 12 | 1807060419576 |
| 13 | 15434332682027 |
| 14 | 131756292799275 |
| 15 | 1124739131632930 |
| 16 | 9598207952367000 |
| 17 | 81889697535538942 |
| 18 | 698632543565035989 |