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 | 6 |
| 4 | 22 |
| 5 | 56 |
| 6 | 133 |
| 7 | 252 |
| 8 | 484 |
| 9 | 798 |
| 10 | 1344 |
| 11 | 2002 |
| 12 | 3157 |
| 13 | 4368 |
| 14 | 6441 |
| 15 | 8630 |
| 16 | 12112 |
| 17 | 15504 |
| 18 | 21274 |
| 19 | 26334 |
| 20 | 35014 |
| 21 | 42762 |
| 22 | 55133 |
| 23 | 65780 |
| 24 | 84349 |
| 25 | 98336 |
| 26 | 123124 |
| 27 | 143304 |
| 28 | 176373 |
| 29 | 201376 |
| 30 | 247380 |
| 31 | 278256 |
| 32 | 336744 |
| 33 | 379000 |
| 34 | 451402 |
| 35 | 502250 |
| 36 | 600055 |
| 37 | 658008 |
| 38 | 775733 |
| 39 | 855042 |