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 | 82 |
| 4 | 193 |
| 5 | 488 |
| 6 | 1087 |
| 7 | 2305 |
| 8 | 4932 |
| 9 | 10416 |
| 10 | 21716 |
| 11 | 45333 |
| 12 | 94798 |
| 13 | 198291 |
| 14 | 415803 |
| 15 | 874740 |
| 16 | 1845166 |
| 17 | 3902324 |
| 18 | 8273999 |
| 19 | 17581622 |
| 20 | 37429453 |
| 21 | 79812519 |
| 22 | 170419522 |
| 23 | 364296166 |
| 24 | 779456642 |
| 25 | 1669010171 |
| 26 | 3575965948 |
| 27 | 7665561753 |
| 28 | 16438759769 |