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 | 311 |
| 2 | 421 |
| 3 | 588 |
| 4 | 869 |
| 5 | 1325 |
| 6 | 2078 |
| 7 | 3319 |
| 8 | 5377 |
| 9 | 8804 |
| 10 | 14545 |
| 11 | 24225 |
| 12 | 40670 |
| 13 | 68843 |
| 14 | 117557 |
| 15 | 202636 |
| 16 | 352813 |
| 17 | 620837 |
| 18 | 1104574 |
| 19 | 1987407 |
| 20 | 3616121 |
| 21 | 6651956 |
| 22 | 12365081 |
| 23 | 23211193 |
| 24 | 43964734 |
| 25 | 83952995 |
| 26 | 161472013 |
| 27 | 312533724 |
| 28 | 608223317 |
| 29 | 1189192349 |
| 30 | 2334286430 |