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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 12 |
| 8 | 22 |
| 9 | 39 |
| 10 | 70 |
| 11 | 126 |
| 12 | 225 |
| 13 | 404 |
| 14 | 725 |
| 15 | 1299 |
| 16 | 2331 |
| 17 | 4182 |
| 18 | 7501 |
| 19 | 13458 |
| 20 | 24145 |
| 21 | 43316 |
| 22 | 77715 |
| 23 | 139430 |
| 24 | 250152 |
| 25 | 448808 |
| 26 | 805222 |
| 27 | 1444677 |
| 28 | 2591958 |
| 29 | 4650342 |
| 30 | 8343380 |
| 31 | 14969239 |
| 32 | 26856992 |
| 33 | 48185362 |
| 34 | 86451602 |
| 35 | 155106844 |
| 36 | 278284440 |
| 37 | 499283177 |
| 38 | 895787396 |
| 39 | 1607174300 |
| 40 | 2883507098 |