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 | 11 |
| 3 | 23 |
| 4 | 59 |
| 5 | 113 |
| 6 | 251 |
| 7 | 509 |
| 8 | 1039 |
| 9 | 2099 |
| 10 | 4219 |
| 11 | 8447 |
| 12 | 16921 |
| 13 | 33851 |
| 14 | 67709 |
| 15 | 135433 |
| 16 | 270899 |
| 17 | 541817 |
| 18 | 1083659 |
| 19 | 2167369 |
| 20 | 4334777 |
| 21 | 8669543 |
| 22 | 17339177 |
| 23 | 34678381 |
| 24 | 69356839 |
| 25 | 138713711 |
| 26 | 277427431 |
| 27 | 554854873 |
| 28 | 1109709709 |
| 29 | 2219419577 |
| 30 | 4438839173 |
| 31 | 8877678499 |
| 32 | 17755357051 |
| 33 | 35510714137 |
| 34 | 71021428277 |
| 35 | 142042856611 |
| 36 | 284085713419 |