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) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 46 |
| 3 | 106 |
| 4 | 226 |
| 5 | 466 |
| 6 | 946 |
| 7 | 1906 |
| 8 | 3826 |
| 9 | 7666 |
| 10 | 15346 |
| 11 | 30706 |
| 12 | 61426 |
| 13 | 122866 |
| 14 | 245746 |
| 15 | 491506 |
| 16 | 983026 |
| 17 | 1966066 |
| 18 | 3932146 |
| 19 | 7864306 |
| 20 | 15728626 |
| 21 | 31457266 |
| 22 | 62914546 |
| 23 | 125829106 |
| 24 | 251658226 |
| 25 | 503316466 |
| 26 | 1006632946 |
| 27 | 2013265906 |
| 28 | 4026531826 |