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 | 1 |
| 2 | 6 |
| 3 | 24 |
| 4 | 66 |
| 5 | 149 |
| 6 | 292 |
| 7 | 520 |
| 8 | 860 |
| 9 | 1345 |
| 10 | 2010 |
| 11 | 2896 |
| 12 | 4046 |
| 13 | 5509 |
| 14 | 7336 |
| 15 | 9584 |
| 16 | 12312 |
| 17 | 15585 |
| 18 | 19470 |
| 19 | 24040 |
| 20 | 29370 |
| 21 | 35541 |
| 22 | 42636 |
| 23 | 50744 |
| 24 | 59956 |
| 25 | 70369 |
| 26 | 82082 |
| 27 | 95200 |
| 28 | 109830 |
| 29 | 126085 |
| 30 | 144080 |
| 31 | 163936 |
| 32 | 185776 |
| 33 | 209729 |
| 34 | 235926 |
| 35 | 264504 |
| 36 | 295602 |
| 37 | 329365 |
| 38 | 365940 |
| 39 | 405480 |
| 40 | 448140 |
| 41 | 494081 |
| 42 | 543466 |
| 43 | 596464 |
| 44 | 653246 |
| 45 | 713989 |
| 46 | 778872 |
| 47 | 848080 |
| 48 | 921800 |
| 49 | 1000225 |
| 50 | 1083550 |