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 | 5 |
| 2 | 49 |
| 3 | 34 |
| 4 | 141 |
| 5 | 231 |
| 6 | 512 |
| 7 | 780 |
| 8 | 1577 |
| 9 | 3162 |
| 10 | 6228 |
| 11 | 12289 |
| 12 | 24231 |
| 13 | 47917 |
| 14 | 95955 |
| 15 | 187945 |
| 16 | 374818 |
| 17 | 743024 |
| 18 | 1477074 |
| 19 | 2928956 |
| 20 | 5839339 |
| 21 | 11579457 |
| 22 | 23039070 |
| 23 | 45786076 |
| 24 | 91055211 |
| 25 | 180969990 |
| 26 | 360008076 |
| 27 | 715728819 |
| 28 | 1423402113 |
| 29 | 2830545436 |
| 30 | 5629547006 |