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 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 29 |
| 5 | 61 |
| 6 | 127 |
| 7 | 257 |
| 8 | 521 |
| 9 | 1049 |
| 10 | 2111 |
| 11 | 4229 |
| 12 | 8461 |
| 13 | 16927 |
| 14 | 33857 |
| 15 | 67723 |
| 16 | 135449 |
| 17 | 270913 |
| 18 | 541831 |
| 19 | 1083689 |
| 20 | 2167393 |
| 21 | 4334791 |
| 22 | 8669593 |
| 23 | 17339197 |
| 24 | 34678421 |
| 25 | 69356857 |
| 26 | 138713717 |
| 27 | 277427441 |
| 28 | 554854889 |
| 29 | 1109709791 |
| 30 | 2219419597 |
| 31 | 4438839259 |
| 32 | 8877678527 |
| 33 | 17755357069 |
| 34 | 35510714159 |
| 35 | 71021428351 |
| 36 | 142042856719 |