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 | 0 |
| 3 | 0 |
| 4 | 3 |
| 5 | 15 |
| 6 | 35 |
| 7 | 75 |
| 8 | 119 |
| 9 | 210 |
| 10 | 289 |
| 11 | 441 |
| 12 | 574 |
| 13 | 804 |
| 14 | 993 |
| 15 | 1329 |
| 16 | 1584 |
| 17 | 2031 |
| 18 | 2378 |
| 19 | 2952 |
| 20 | 3386 |
| 21 | 4122 |
| 22 | 4654 |
| 23 | 5550 |
| 24 | 6211 |
| 25 | 7284 |
| 26 | 8064 |
| 27 | 9354 |
| 28 | 10263 |
| 29 | 11763 |
| 30 | 12839 |
| 31 | 14565 |
| 32 | 15791 |
| 33 | 17790 |
| 34 | 19177 |
| 35 | 21435 |
| 36 | 23026 |
| 37 | 25560 |
| 38 | 27333 |
| 39 | 30195 |
| 40 | 32160 |
| 41 | 35331 |
| 42 | 37538 |
| 43 | 41034 |
| 44 | 43454 |
| 45 | 47334 |