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 | 5 |
| 4 | 12 |
| 5 | 17 |
| 6 | 47 |
| 7 | 65 |
| 8 | 170 |
| 9 | 277 |
| 10 | 655 |
| 11 | 1025 |
| 12 | 2739 |
| 13 | 4097 |
| 14 | 10281 |
| 15 | 17257 |
| 16 | 41364 |
| 17 | 65537 |
| 18 | 170047 |
| 19 | 262145 |
| 20 | 660296 |
| 21 | 1094457 |
| 22 | 2621965 |
| 23 | 4194305 |
| 24 | 10898799 |
| 25 | 16792721 |
| 26 | 41945103 |
| 27 | 69938141 |
| 28 | 168546184 |
| 29 | 268435457 |
| 30 | 694029255 |
| 31 | 1073741825 |
| 32 | 2696094037 |
| 33 | 4474449261 |
| 34 | 10737451027 |