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 | 3 |
| 3 | 7 |
| 4 | 11 |
| 5 | 29 |
| 6 | 53 |
| 7 | 107 |
| 8 | 211 |
| 9 | 431 |
| 10 | 853 |
| 11 | 1709 |
| 12 | 3433 |
| 13 | 6857 |
| 14 | 13709 |
| 15 | 27427 |
| 16 | 54851 |
| 17 | 109717 |
| 18 | 219409 |
| 19 | 438827 |
| 20 | 877651 |
| 21 | 1755319 |
| 22 | 3510623 |
| 23 | 7021249 |
| 24 | 14042491 |
| 25 | 28084997 |
| 26 | 56169977 |
| 27 | 112339957 |
| 28 | 224679913 |
| 29 | 449359829 |
| 30 | 898719707 |
| 31 | 1797439367 |
| 32 | 3594878731 |
| 33 | 7189757483 |
| 34 | 14379514973 |
| 35 | 28759029919 |
| 36 | 57518059831 |