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 | 81 |
| 2 | 83 |
| 3 | 86 |
| 4 | 92 |
| 5 | 102 |
| 6 | 122 |
| 7 | 158 |
| 8 | 230 |
| 9 | 366 |
| 10 | 638 |
| 11 | 1166 |
| 12 | 2222 |
| 13 | 4302 |
| 14 | 8462 |
| 15 | 16718 |
| 16 | 33230 |
| 17 | 66126 |
| 18 | 131918 |
| 19 | 263246 |
| 20 | 525902 |
| 21 | 1050702 |
| 22 | 2100302 |
| 23 | 4198478 |
| 24 | 8394830 |
| 25 | 16785486 |
| 26 | 33566798 |
| 27 | 67125326 |
| 28 | 134242382 |
| 29 | 268468302 |
| 30 | 536920142 |
| 31 | 1073807438 |
| 32 | 2147582030 |