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 | 1 |
| 3 | 12 |
| 4 | 1 |
| 5 | 15 |
| 6 | 1 |
| 7 | 2 |
| 8 | 1 |
| 9 | 1929501 |
| 10 | 1 |
| 11 | 13228907223310811104028677 |
| 12 | 1 |
| 13 | 94 |
| 14 | 1 |
| 15 | 11 |
| 16 | 1 |
| 17 | 85364353 |
| 18 | 1 |
| 19 | 1563 |
| 20 | 1 |
| 21 | 49 |
| 22 | 1 |
| 23 | 9258095644888888790279763522646107297983 |
| 24 | 1 |
| 25 | 23 |
| 26 | 1 |
| 27 | 66 |
| 28 | 1 |