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 | 20 |
| 5 | 56 |
| 6 | 108 |
| 7 | 208 |
| 8 | 340 |
| 9 | 504 |
| 10 | 788 |
| 11 | 1136 |
| 12 | 1548 |
| 13 | 2136 |
| 14 | 2820 |
| 15 | 3600 |
| 16 | 4748 |
| 17 | 6056 |
| 18 | 7524 |
| 19 | 9312 |
| 20 | 11292 |
| 21 | 13464 |
| 22 | 16380 |
| 23 | 19584 |
| 24 | 23076 |
| 25 | 27272 |
| 26 | 31820 |
| 27 | 36720 |
| 28 | 42668 |
| 29 | 49064 |
| 30 | 55908 |
| 31 | 63712 |
| 32 | 72028 |
| 33 | 80856 |
| 34 | 91596 |
| 35 | 103008 |
| 36 | 115092 |
| 37 | 128456 |
| 38 | 142556 |
| 39 | 157392 |
| 40 | 174932 |
| 41 | 193400 |