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 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 1 |
| 5 | 19 |
| 6 | 25 |
| 7 | 11 |
| 8 | 161 |
| 9 | 227 |
| 10 | 681 |
| 11 | 1019 |
| 12 | 3057 |
| 13 | 5075 |
| 14 | 15225 |
| 15 | 29291 |
| 16 | 55105 |
| 17 | 34243 |
| 18 | 233801 |
| 19 | 439259 |
| 20 | 269201 |
| 21 | 1856179 |
| 22 | 3471385 |
| 23 | 6219851 |
| 24 | 1882337 |
| 25 | 5647011 |
| 26 | 50495465 |
| 27 | 17268667 |
| 28 | 186023729 |
| 29 | 21200275 |
| 30 | 63600825 |
| 31 | 1264544299 |
| 32 | 3793632897 |
| 33 | 7085931395 |