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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 1 |
| 10 | 1 |
| 11 | 4 |
| 12 | 19 |
| 13 | 23 |
| 14 | 16 |
| 15 | 43 |
| 16 | 59 |
| 17 | 66 |
| 18 | 127 |
| 19 | 492 |
| 20 | 886 |
| 21 | 964 |
| 22 | 2595 |
| 23 | 11426 |
| 24 | 36780 |
| 25 | 78070 |
| 26 | 131232 |
| 27 | 423402 |
| 28 | 1302893 |
| 29 | 3356226 |
| 30 | 6673924 |
| 31 | 16604441 |
| 32 | 32195439 |
| 33 | 69328860 |