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 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 12871 |
| 17 | 48621 |
| 18 | 136137 |
| 19 | 335921 |
| 20 | 772617 |
| 21 | 1700273 |
| 22 | 3633105 |
| 23 | 7607297 |
| 24 | 9481216677 |
| 25 | 78911366771 |
| 26 | 433024685291 |
| 27 | 1961914734031 |
| 28 | 7943932891111 |
| 29 | 29871106149031 |
| 30 | 106624217245891 |
| 31 | 366332387265871 |
| 32 | 100783979161693411 |