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 | 456 |
| 2 | 540 |
| 3 | 7666 |
| 4 | 72722 |
| 5 | 356430 |
| 6 | 643566 |
| 7 | 9090911 |
| 8 | 35294119 |
| 9 | 64705877 |
| 10 | 335664330 |
| 11 | 664335666 |
| 12 | 684210521 |
| 13 | 818181820 |
| 14 | 838056675 |
| 15 | 846153848 |
| 16 | 866028703 |
| 17 | 980125140 |
| 18 | 3861386140 |
| 19 | 6138613856 |
| 20 | 6916125390 |
| 21 | 9222488468 |
| 22 | 41358246491 |