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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 14 |
| 5 | 28 |
| 6 | 62 |
| 7 | 150 |
| 8 | 380 |
| 9 | 787 |
| 10 | 1760 |
| 11 | 3951 |
| 12 | 9338 |
| 13 | 19536 |
| 14 | 43224 |
| 15 | 94326 |
| 16 | 213278 |
| 17 | 448193 |
| 18 | 979712 |
| 19 | 2094981 |
| 20 | 4622262 |
| 21 | 9670378 |
| 22 | 20886560 |
| 23 | 44067191 |
| 24 | 95469402 |
| 25 | 198712506 |