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 | 160 |
| 1 | 996 |
| 2 | 2668 |
| 3 | 6012 |
| 4 | 12700 |
| 5 | 26076 |
| 6 | 52828 |
| 7 | 106332 |
| 8 | 213340 |
| 9 | 427356 |
| 10 | 855388 |
| 11 | 1711452 |
| 12 | 3423580 |
| 13 | 6847836 |
| 14 | 13696348 |
| 15 | 27393372 |
| 16 | 54787420 |
| 17 | 109575516 |
| 18 | 219151708 |
| 19 | 438304092 |
| 20 | 876608860 |
| 21 | 1753218396 |
| 22 | 3506437468 |
| 23 | 7012875612 |
| 24 | 14025751900 |
| 25 | 28051504476 |
| 26 | 56103009628 |
| 27 | 112206019932 |
| 28 | 224412040540 |
| 29 | 448824081756 |