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 | 3 |
| 3 | 3 |
| 4 | 9 |
| 5 | 11 |
| 6 | 29 |
| 7 | 39 |
| 8 | 93 |
| 9 | 135 |
| 10 | 301 |
| 11 | 463 |
| 12 | 981 |
| 13 | 1575 |
| 14 | 3213 |
| 15 | 5327 |
| 16 | 10565 |
| 17 | 17943 |
| 18 | 34845 |
| 19 | 60255 |
| 20 | 115189 |
| 21 | 201895 |
| 22 | 381453 |
| 23 | 675375 |
| 24 | 1264869 |
| 25 | 2256503 |
| 26 | 4198397 |
| 27 | 7532415 |
| 28 | 13945941 |
| 29 | 25126983 |
| 30 | 46350829 |
| 31 | 83777743 |
| 32 | 154117317 |
| 33 | 279225111 |