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 | 11 |
| 2 | 66 |
| 3 | 286 |
| 4 | 1001 |
| 5 | 3003 |
| 6 | 7798 |
| 7 | 17858 |
| 8 | 36873 |
| 9 | 70003 |
| 10 | 124130 |
| 11 | 208110 |
| 12 | 333025 |
| 13 | 512435 |
| 14 | 762630 |
| 15 | 1102882 |
| 16 | 1555697 |
| 17 | 2147067 |
| 18 | 2906722 |
| 19 | 3868382 |
| 20 | 5070009 |
| 21 | 6554059 |
| 22 | 8367734 |
| 23 | 10563234 |
| 24 | 13198009 |
| 25 | 16335011 |
| 26 | 20042946 |
| 27 | 24396526 |
| 28 | 29476721 |
| 29 | 35371011 |
| 30 | 42173638 |
| 31 | 49985858 |