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 | 0 |
| 2 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 10 |
| 6 | 38 |
| 7 | 26 |
| 8 | 94 |
| 9 | 102 |
| 10 | 278 |
| 11 | 214 |
| 12 | 1246 |
| 13 | 702 |
| 14 | 2798 |
| 15 | 4342 |
| 16 | 8926 |
| 17 | 8230 |
| 18 | 44222 |
| 19 | 29202 |
| 20 | 136030 |
| 21 | 176750 |
| 22 | 419870 |
| 23 | 381490 |
| 24 | 2150398 |
| 25 | 1678254 |
| 26 | 5593998 |
| 27 | 7461166 |
| 28 | 22553406 |
| 29 | 19175158 |
| 30 | 134391038 |
| 31 | 71585134 |