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 | 6 |
| 2 | 20 |
| 3 | 42 |
| 4 | 72 |
| 5 | 110 |
| 6 | 156 |
| 7 | 210 |
| 8 | 272 |
| 9 | 342 |
| 10 | 420 |
| 11 | 506 |
| 12 | 600 |
| 13 | 702 |
| 14 | 812 |
| 15 | 930 |
| 16 | 1056 |
| 17 | 1190 |
| 18 | 1332 |
| 19 | 1482 |
| 20 | 1640 |
| 21 | 1806 |
| 22 | 1980 |
| 23 | 2162 |
| 24 | 2352 |
| 25 | 2550 |
| 26 | 2756 |
| 27 | 2970 |
| 28 | 3192 |
| 29 | 3422 |
| 30 | 3660 |
| 31 | 3906 |
| 32 | 4160 |
| 33 | 4422 |
| 34 | 4692 |
| 35 | 4970 |
| 36 | 5256 |
| 37 | 5550 |
| 38 | 5852 |
| 39 | 6162 |
| 40 | 6480 |
| 41 | 6806 |
| 42 | 7140 |
| 43 | 7482 |
| 44 | 7832 |
| 45 | 8190 |
| 46 | 8556 |
| 47 | 8930 |