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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 1 |
| 18 | 48621 |
| 19 | 184757 |
| 20 | 520677 |
| 21 | 1293293 |
| 22 | 2993565 |
| 23 | 6626669 |
| 24 | 14233965 |
| 25 | 29938871 |
| 26 | 62040891 |
| 27 | 228000637831 |
| 28 | 1914395677411 |
| 29 | 10597881432571 |
| 30 | 48446119334191 |
| 31 | 197900630004571 |
| 32 | 750527665784311 |
| 33 | 2700730064112181 |