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 | 11 |
| 3 | 12 |
| 4 | 60 |
| 5 | 108 |
| 6 | 139 |
| 7 | 176 |
| 8 | 1228 |
| 9 | 1356 |
| 10 | 3166 |
| 11 | 14807 |
| 12 | 81596 |
| 13 | 116387 |
| 14 | 1367315 |
| 15 | 4408018 |
| 16 | 11560054 |
| 17 | 15330821 |
| 18 | 448349063 |
| 19 | 574897948 |
| 20 | 613663772 |
| 21 | 636869505 |
| 22 | 999446566 |
| 23 | 3786082000 |
| 24 | 6911150147 |
| 25 | 19780703830 |
| 26 | 25945009665 |
| 27 | 33227233233 |
| 28 | 103529753474 |
| 29 | 118556676397 |