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 | 5 |
| 1 | 50 |
| 2 | 266 |
| 3 | 1016 |
| 4 | 3139 |
| 5 | 8350 |
| 6 | 19855 |
| 7 | 43252 |
| 8 | 87802 |
| 9 | 168168 |
| 10 | 306735 |
| 11 | 536640 |
| 12 | 905658 |
| 13 | 1481108 |
| 14 | 2355962 |
| 15 | 3656360 |
| 16 | 5550755 |
| 17 | 8260934 |
| 18 | 12075184 |
| 19 | 17363896 |
| 20 | 24597925 |
| 21 | 34370050 |
| 22 | 47419905 |
| 23 | 64662780 |
| 24 | 87222720 |
| 25 | 116470380 |
| 26 | 154066125 |
| 27 | 202008896 |
| 28 | 262691396 |
| 29 | 338962184 |