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 | 2592 |
| 2 | 5664 |
| 3 | 13720 |
| 4 | 35704 |
| 5 | 92548 |
| 6 | 228081 |
| 7 | 526672 |
| 8 | 1183616 |
| 9 | 2727288 |
| 10 | 6597449 |
| 11 | 16454876 |
| 12 | 40863000 |
| 13 | 98379104 |
| 14 | 230053160 |
| 15 | 534172704 |
| 16 | 1260245516 |
| 17 | 3043544240 |
| 18 | 7443617220 |
| 19 | 18093595536 |
| 20 | 43272115712 |
| 21 | 102190186552 |
| 22 | 241107878575 |