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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 6 |
| 6 | 18 |
| 7 | 38 |
| 8 | 56 |
| 9 | 94 |
| 10 | 118 |
| 11 | 148 |
| 12 | 286 |
| 13 | 1358 |
| 14 | 1480 |
| 15 | 1514 |
| 16 | 2680 |
| 17 | 2846 |
| 18 | 4078 |
| 19 | 4288 |
| 20 | 5612 |
| 21 | 5680 |
| 22 | 6440 |
| 23 | 6586 |
| 24 | 14614 |
| 25 | 30972 |
| 26 | 31690 |
| 27 | 54406 |