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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 7 |
| 7 | 1 |
| 8 | 1 |
| 9 | 127 |
| 10 | 1 |
| 11 | 1 |
| 12 | 127 |
| 13 | 769 |
| 14 | 10945 |
| 15 | 15961 |
| 16 | 86641 |
| 17 | 86521 |
| 18 | 430717 |
| 19 | 4140367 |
| 20 | 4146751 |
| 21 | 93669001 |
| 22 | 1538834041 |
| 23 | 663998665 |
| 24 | 6883029151 |
| 25 | 1014140647 |
| 26 | 20591858857 |
| 27 | 121532206567 |
| 28 | 1637261351983 |
| 29 | 2981530899847 |
| 30 | 5950338797191 |
| 31 | 47072230385425 |