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 | 4 |
| 2 | 16 |
| 3 | 44 |
| 4 | 96 |
| 5 | 180 |
| 6 | 304 |
| 7 | 476 |
| 8 | 704 |
| 9 | 996 |
| 10 | 1360 |
| 11 | 1804 |
| 12 | 2336 |
| 13 | 2964 |
| 14 | 3696 |
| 15 | 4540 |
| 16 | 5504 |
| 17 | 6596 |
| 18 | 7824 |
| 19 | 9196 |
| 20 | 10720 |
| 21 | 12404 |
| 22 | 14256 |
| 23 | 16284 |
| 24 | 18496 |
| 25 | 20900 |
| 26 | 23504 |
| 27 | 26316 |
| 28 | 29344 |
| 29 | 32596 |
| 30 | 36080 |
| 31 | 39804 |
| 32 | 43776 |
| 33 | 48004 |
| 34 | 52496 |
| 35 | 57260 |
| 36 | 62304 |
| 37 | 67636 |
| 38 | 73264 |
| 39 | 79196 |
| 40 | 85440 |
| 41 | 92004 |