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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 12 |
| 6 | 32 |
| 7 | 36 |
| 8 | 572 |
| 9 | 1991 |
| 10 | 20857 |
| 11 | 27432 |
| 12 | 28763 |
| 13 | 155122 |
| 14 | 190271 |
| 15 | 288108 |
| 16 | 484709 |
| 17 | 1395499 |
| 18 | 9370521 |
| 19 | 12918396 |
| 20 | 22646948 |
| 21 | 49496125 |
| 22 | 73469408 |
| 23 | 172128260 |
| 24 | 645676547 |