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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 11 |
| 5 | 24 |
| 6 | 35 |
| 7 | 85 |
| 8 | 175 |
| 9 | 274 |
| 10 | 322 |
| 11 | 546 |
| 12 | 720 |
| 13 | 870 |
| 14 | 1320 |
| 15 | 1624 |
| 16 | 1925 |
| 17 | 2717 |
| 18 | 3731 |
| 19 | 5005 |
| 20 | 6580 |
| 21 | 6769 |
| 22 | 8500 |
| 23 | 10812 |
| 24 | 13068 |
| 25 | 13566 |
| 26 | 16815 |
| 27 | 20615 |
| 28 | 22449 |
| 29 | 25025 |
| 30 | 30107 |
| 31 | 35926 |
| 32 | 40320 |
| 33 | 42550 |
| 34 | 50050 |
| 35 | 58500 |
| 36 | 63273 |
| 37 | 67977 |
| 38 | 78561 |
| 39 | 90335 |
| 40 | 103385 |
| 41 | 117800 |
| 42 | 118124 |
| 43 | 133672 |