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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 3640 |
| 7 | 7863 |
| 8 | 7894 |
| 9 | 8186 |
| 10 | 11830 |
| 11 | 18200 |
| 12 | 39315 |
| 13 | 39470 |
| 14 | 40930 |
| 15 | 59150 |
| 16 | 2521602 |
| 17 | 3278326 |
| 18 | 4167678 |
| 19 | 13196470 |
| 20 | 17870857 |
| 21 | 17992485 |
| 22 | 20838390 |
| 23 | 36724952 |
| 24 | 58516102 |
| 25 | 73231902 |
| 26 | 89354285 |
| 27 | 89962425 |
| 28 | 105564531 |
| 29 | 200046408 |
| 30 | 301764432 |
| 31 | 446771425 |
| 32 | 449812125 |
| 33 | 633387186 |