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 | 0 |
| 4 | 4 |
| 5 | 14 |
| 6 | 36 |
| 7 | 76 |
| 8 | 140 |
| 9 | 234 |
| 10 | 364 |
| 11 | 536 |
| 12 | 756 |
| 13 | 1030 |
| 14 | 1364 |
| 15 | 1764 |
| 16 | 2236 |
| 17 | 2786 |
| 18 | 3420 |
| 19 | 4144 |
| 20 | 4964 |
| 21 | 5886 |
| 22 | 6916 |
| 23 | 8060 |
| 24 | 9324 |
| 25 | 10714 |
| 26 | 12236 |
| 27 | 13896 |
| 28 | 15700 |
| 29 | 17654 |
| 30 | 19764 |
| 31 | 22036 |
| 32 | 24476 |
| 33 | 27090 |
| 34 | 29884 |
| 35 | 32864 |
| 36 | 36036 |
| 37 | 39406 |
| 38 | 42980 |
| 39 | 46764 |
| 40 | 50764 |