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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 8 |
| 4 | 29 |
| 5 | 37 |
| 6 | 103 |
| 7 | 472 |
| 8 | 2369 |
| 9 | 2593 |
| 10 | 30791 |
| 11 | 32891 |
| 12 | 452993 |
| 13 | 476753 |
| 14 | 499061 |
| 15 | 2080328 |
| 16 | 18358463 |
| 17 | 18999103 |
| 18 | 124184839 |
| 19 | 127860511 |
| 20 | 26274175 |
| 21 | 8982005 |
| 22 | 211524139 |
| 23 | 648798629 |
| 24 | 16562041459 |
| 25 | 16891532467 |
| 26 | 154883957203 |
| 27 | 157646059403 |
| 28 | 4649180818987 |
| 29 | 4724140023307 |