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 | 4 |
| 1 | 1 |
| 2 | 1 |
| 3 | 481 |
| 4 | 5727 |
| 5 | 1107 |
| 6 | 8851 |
| 7 | 18027 |
| 8 | 5457 |
| 9 | 408807 |
| 10 | 57931 |
| 11 | 358531 |
| 12 | 274587 |
| 13 | 256497 |
| 14 | 6111627 |
| 15 | 67437 |
| 16 | 3246567 |
| 17 | 1638811 |
| 18 | 8224977 |
| 19 | 11687221 |
| 20 | 24556351 |
| 21 | 3129657 |
| 22 | 15602131 |
| 23 | 571381 |
| 24 | 23034391 |
| 25 | 110598987 |
| 26 | 26716321 |
| 27 | 31722117 |
| 28 | 39711931 |
| 29 | 5046777 |
| 30 | 81054327 |
| 31 | 1346611 |
| 32 | 44656587 |