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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 17 |
| 5 | 1 |
| 6 | 129 |
| 7 | 1 |
| 8 | 769 |
| 9 | 19684 |
| 10 | 4097 |
| 11 | 1 |
| 12 | 1614804 |
| 13 | 1 |
| 14 | 98305 |
| 15 | 86093443 |
| 16 | 4295426049 |
| 17 | 1 |
| 18 | 3876302043 |
| 19 | 1 |
| 20 | 4398055948289 |
| 21 | 156905298046 |
| 22 | 41943041 |
| 23 | 1 |
| 24 | 2820680971922038 |
| 25 | 298023223876953126 |
| 26 | 805306369 |
| 27 | 213516729579637 |
| 28 | 1441151884248219649 |
| 29 | 1 |