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 | 3 |
| 2 | 12 |
| 3 | 24 |
| 4 | 51 |
| 5 | 99 |
| 6 | 204 |
| 7 | 396 |
| 8 | 408 |
| 9 | 819 |
| 10 | 1587 |
| 11 | 1635 |
| 12 | 3276 |
| 13 | 6348 |
| 14 | 6540 |
| 15 | 6552 |
| 16 | 13107 |
| 17 | 25395 |
| 18 | 26163 |
| 19 | 26211 |
| 20 | 52428 |
| 21 | 101580 |
| 22 | 104652 |
| 23 | 104844 |
| 24 | 104856 |
| 25 | 209715 |
| 26 | 406323 |
| 27 | 418611 |
| 28 | 419379 |
| 29 | 419427 |
| 30 | 838860 |
| 31 | 1625292 |
| 32 | 1674444 |
| 33 | 1677516 |
| 34 | 1677708 |
| 35 | 1677720 |
| 36 | 3355443 |
| 37 | 6501171 |