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 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 0 |
| 4 | 0 |
| 5 | 5 |
| 6 | 3 |
| 7 | 7 |
| 8 | 12 |
| 9 | 12 |
| 10 | 30 |
| 11 | 51 |
| 12 | 75 |
| 13 | 139 |
| 14 | 232 |
| 15 | 365 |
| 16 | 640 |
| 17 | 1029 |
| 18 | 1717 |
| 19 | 2872 |
| 20 | 4789 |
| 21 | 7996 |
| 22 | 13338 |
| 23 | 22288 |
| 24 | 36896 |
| 25 | 61942 |
| 26 | 102746 |
| 27 | 170993 |
| 28 | 286029 |
| 29 | 476053 |
| 30 | 793800 |