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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 7 |
| 4 | 24 |
| 5 | 57 |
| 6 | 135 |
| 7 | 259 |
| 8 | 432 |
| 9 | 732 |
| 10 | 1125 |
| 11 | 1638 |
| 12 | 2376 |
| 13 | 3302 |
| 14 | 4410 |
| 15 | 5915 |
| 16 | 7680 |
| 17 | 9765 |
| 18 | 12393 |
| 19 | 15447 |
| 20 | 18900 |
| 21 | 23170 |
| 22 | 27951 |
| 23 | 33348 |
| 24 | 39744 |
| 25 | 46900 |
| 26 | 54756 |
| 27 | 63999 |
| 28 | 74088 |
| 29 | 85185 |
| 30 | 97875 |
| 31 | 111755 |
| 32 | 126720 |
| 33 | 143792 |
| 34 | 162129 |
| 35 | 181962 |
| 36 | 204120 |
| 37 | 227994 |
| 38 | 253422 |
| 39 | 281827 |
| 40 | 312000 |