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 | 5 |
| 4 | 5 |
| 5 | 9 |
| 6 | 13 |
| 7 | 21 |
| 8 | 33 |
| 9 | 61 |
| 10 | 105 |
| 11 | 189 |
| 12 | 345 |
| 13 | 633 |
| 14 | 1173 |
| 15 | 2193 |
| 16 | 4097 |
| 17 | 7713 |
| 18 | 14573 |
| 19 | 27597 |
| 20 | 52433 |
| 21 | 99881 |
| 22 | 190653 |
| 23 | 364725 |
| 24 | 699073 |
| 25 | 1342185 |
| 26 | 2581113 |
| 27 | 4971069 |
| 28 | 9586985 |
| 29 | 18512793 |
| 30 | 35791473 |
| 31 | 69273669 |
| 32 | 134217729 |
| 33 | 260301177 |
| 34 | 505290273 |
| 35 | 981706833 |