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 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 19 |
| 6 | 37 |
| 7 | 69 |
| 8 | 129 |
| 9 | 244 |
| 10 | 460 |
| 11 | 865 |
| 12 | 1629 |
| 13 | 3069 |
| 14 | 5779 |
| 15 | 10882 |
| 16 | 20494 |
| 17 | 38595 |
| 18 | 72681 |
| 19 | 136873 |
| 20 | 257761 |
| 21 | 485416 |
| 22 | 914136 |
| 23 | 1721505 |
| 24 | 3241945 |
| 25 | 6105241 |
| 26 | 11497411 |
| 27 | 21651966 |
| 28 | 40775058 |
| 29 | 76787731 |
| 30 | 144606925 |
| 31 | 272324269 |
| 32 | 512842017 |
| 33 | 965785884 |