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 | 19380 |
| 3 | 9443670 |
| 4 | 11054760 |
| 5 | 15992070 |
| 6 | 22482330 |
| 7 | 32557380 |
| 8 | 51102510 |
| 9 | 57978840 |
| 10 | 60549240 |
| 11 | 64671570 |
| 12 | 84045960 |
| 13 | 89757960 |
| 14 | 111316170 |
| 15 | 112821690 |
| 16 | 116433510 |
| 17 | 171124380 |
| 18 | 171418650 |
| 19 | 183082350 |
| 20 | 196694760 |
| 21 | 197021160 |
| 22 | 241803240 |
| 23 | 266498460 |