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 | 124 |
| 2 | 260 |
| 3 | 548 |
| 4 | 1156 |
| 5 | 2436 |
| 6 | 5132 |
| 7 | 10812 |
| 8 | 22780 |
| 9 | 47996 |
| 10 | 101124 |
| 11 | 213060 |
| 12 | 448900 |
| 13 | 945796 |
| 14 | 1992716 |
| 15 | 4198492 |
| 16 | 8845884 |
| 17 | 18637564 |
| 18 | 39267844 |
| 19 | 82734180 |
| 20 | 174314244 |
| 21 | 367266052 |
| 22 | 773799948 |
| 23 | 1630334076 |
| 24 | 3434982396 |
| 25 | 7237230844 |
| 26 | 15248261636 |