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 | 6 |
| 3 | 28 |
| 4 | 120 |
| 5 | 220 |
| 6 | 284 |
| 7 | 496 |
| 8 | 672 |
| 9 | 1184 |
| 10 | 1210 |
| 11 | 1560 |
| 12 | 1740 |
| 13 | 1980 |
| 14 | 2016 |
| 15 | 2556 |
| 16 | 2620 |
| 17 | 2924 |
| 18 | 5020 |
| 19 | 5564 |
| 20 | 6232 |
| 21 | 6368 |
| 22 | 7380 |
| 23 | 7776 |
| 24 | 8128 |
| 25 | 9180 |
| 26 | 9504 |
| 27 | 10744 |
| 28 | 10856 |
| 29 | 11556 |
| 30 | 12285 |
| 31 | 14595 |
| 32 | 17296 |
| 33 | 18416 |
| 34 | 19260 |
| 35 | 20448 |
| 36 | 20640 |
| 37 | 20664 |
| 38 | 21168 |
| 39 | 21384 |
| 40 | 21924 |
| 41 | 22200 |
| 42 | 22428 |
| 43 | 22752 |