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 | 4 |
| 2 | 36 |
| 3 | 500 |
| 4 | 2744 |
| 5 | 26620 |
| 6 | 61516 |
| 7 | 235824 |
| 8 | 411540 |
| 9 | 1070696 |
| 10 | 3414460 |
| 11 | 4766560 |
| 12 | 11548884 |
| 13 | 19297880 |
| 14 | 24488156 |
| 15 | 38206864 |
| 16 | 69674436 |
| 17 | 119119820 |
| 18 | 140728220 |
| 19 | 224970724 |
| 20 | 300645240 |
| 21 | 345447096 |
| 22 | 512760560 |
| 23 | 656411476 |
| 24 | 930559080 |
| 25 | 1431071264 |