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 | 8 |
| 2 | 17 |
| 3 | 54 |
| 4 | 57 |
| 5 | 177 |
| 6 | 368 |
| 7 | 2169 |
| 8 | 2530 |
| 9 | 6250 |
| 10 | 8361 |
| 11 | 94932 |
| 12 | 131361 |
| 13 | 178478 |
| 14 | 524649 |
| 15 | 1596520 |
| 16 | 1647086 |
| 17 | 8389137 |
| 18 | 48989176 |
| 19 | 129145076 |
| 20 | 536871753 |
| 21 | 1162268326 |
| 22 | 1221074418 |
| 23 | 1996813914 |
| 24 | 2147484609 |
| 25 | 94143190994 |
| 26 | 96951758924 |
| 27 | 137438954841 |