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 | 2 |
| 1 | 0 |
| 2 | 3 |
| 3 | 35 |
| 4 | 71 |
| 5 | 1151 |
| 6 | 1079 |
| 7 | 4199 |
| 8 | 11879 |
| 9 | 7559 |
| 10 | 32759 |
| 11 | 30239 |
| 12 | 75599 |
| 13 | 171359 |
| 14 | 241919 |
| 15 | 251999 |
| 16 | 262079 |
| 17 | 393119 |
| 18 | 604799 |
| 19 | 665279 |
| 20 | 1572479 |
| 21 | 1834559 |
| 22 | 2827439 |
| 23 | 2570399 |
| 24 | 2358719 |
| 25 | 7862399 |
| 26 | 7814015 |
| 27 | 5405399 |
| 28 | 6683039 |
| 29 | 18017999 |
| 30 | 20180159 |
| 31 | 8648639 |
| 32 | 17992799 |
| 33 | 17297279 |