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 | 6 |
| 2 | 36 |
| 3 | 92 |
| 4 | 241 |
| 5 | 720 |
| 6 | 1889 |
| 7 | 4719 |
| 8 | 12102 |
| 9 | 30414 |
| 10 | 74588 |
| 11 | 182737 |
| 12 | 445468 |
| 13 | 1075185 |
| 14 | 2583413 |
| 15 | 6187826 |
| 16 | 14753420 |
| 17 | 35052328 |
| 18 | 83069841 |
| 19 | 196345572 |
| 20 | 462972905 |
| 21 | 1089545883 |
| 22 | 2559508250 |
| 23 | 6002666694 |
| 24 | 14057272936 |
| 25 | 32876868289 |
| 26 | 76799290072 |