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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 13 |
| 3 | 7 |
| 4 | 149 |
| 5 | 157 |
| 6 | 383 |
| 7 | 199 |
| 8 | 7409 |
| 9 | 7633 |
| 10 | 86231 |
| 11 | 88331 |
| 12 | 1173713 |
| 13 | 1197473 |
| 14 | 1219781 |
| 15 | 620401 |
| 16 | 42862943 |
| 17 | 43503583 |
| 18 | 279379879 |
| 19 | 283055551 |
| 20 | 57313183 |
| 21 | 19328341 |
| 22 | 449489867 |
| 23 | 1362695813 |
| 24 | 34409471059 |
| 25 | 34738962067 |
| 26 | 315510823603 |
| 27 | 45467560829 |
| 28 | 9307359944587 |
| 29 | 9382319148907 |
| 30 | 293103346860157 |
| 31 | 147643434162641 |
| 32 | 594812856101039 |
| 33 | 54448301591149 |