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 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 5 |
| 8 | 12 |
| 9 | 24 |
| 10 | 56 |
| 11 | 123 |
| 12 | 292 |
| 13 | 682 |
| 14 | 1667 |
| 15 | 4079 |
| 16 | 10288 |
| 17 | 26159 |
| 18 | 68026 |
| 19 | 178823 |
| 20 | 478659 |
| 21 | 1296271 |
| 22 | 3564911 |
| 23 | 9919320 |
| 24 | 27978084 |
| 25 | 79816424 |
| 26 | 230520511 |
| 27 | 673071482 |
| 28 | 1987599262 |
| 29 | 5930739339 |
| 30 | 17883932293 |
| 31 | 54464027956 |
| 32 | 167512285647 |
| 33 | 520076498672 |
| 34 | 1629804156975 |