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 | 3 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 19 |
| 6 | 37 |
| 7 | 67 |
| 8 | 124 |
| 9 | 235 |
| 10 | 436 |
| 11 | 808 |
| 12 | 1513 |
| 13 | 2821 |
| 14 | 5245 |
| 15 | 9784 |
| 16 | 18247 |
| 17 | 33982 |
| 18 | 63334 |
| 19 | 118075 |
| 20 | 220021 |
| 21 | 410023 |
| 22 | 764248 |
| 23 | 1424311 |
| 24 | 2654380 |
| 25 | 4947124 |
| 26 | 9220057 |
| 27 | 17183197 |
| 28 | 32024569 |
| 29 | 59684740 |
| 30 | 111234331 |
| 31 | 207308038 |
| 32 | 386362258 |
| 33 | 720065251 |
| 34 | 1341989365 |