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 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 13 |
| 8 | 1 |
| 9 | 18 |
| 10 | 68 |
| 11 | 142 |
| 12 | 237 |
| 13 | 862 |
| 14 | 1672 |
| 15 | 3188 |
| 16 | 1768 |
| 17 | 6078 |
| 18 | 16090 |
| 19 | 32566 |
| 20 | 62214 |
| 21 | 181695 |
| 22 | 380903 |
| 23 | 802572 |
| 24 | 1634880 |
| 25 | 3784693 |
| 26 | 7871112 |
| 27 | 17020646 |
| 28 | 36800640 |
| 29 | 78582498 |
| 30 | 168074511 |
| 31 | 206295476 |
| 32 | 209557176 |
| 33 | 490017420 |
| 34 | 1097340244 |
| 35 | 2222684855 |
| 36 | 5116364054 |