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 | 3 |
| 3 | 5 |
| 4 | 17 |
| 5 | 23 |
| 6 | 98 |
| 7 | 122 |
| 8 | 634 |
| 9 | 754 |
| 10 | 4644 |
| 11 | 5364 |
| 12 | 38268 |
| 13 | 43308 |
| 14 | 351504 |
| 15 | 391824 |
| 16 | 3566736 |
| 17 | 3929616 |
| 18 | 39659040 |
| 19 | 43287840 |
| 20 | 479795040 |
| 21 | 519711840 |
| 22 | 6276458880 |
| 23 | 6755460480 |
| 24 | 88299987840 |
| 25 | 94527008640 |
| 26 | 1329605141760 |
| 27 | 1416783432960 |