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 | 6 |
| 3 | 26 |
| 4 | 68 |
| 5 | 140 |
| 6 | 250 |
| 7 | 406 |
| 8 | 616 |
| 9 | 888 |
| 10 | 1230 |
| 11 | 1650 |
| 12 | 2156 |
| 13 | 2756 |
| 14 | 3458 |
| 15 | 4270 |
| 16 | 5200 |
| 17 | 6256 |
| 18 | 7446 |
| 19 | 8778 |
| 20 | 10260 |
| 21 | 11900 |
| 22 | 13706 |
| 23 | 15686 |
| 24 | 17848 |
| 25 | 20200 |
| 26 | 22750 |
| 27 | 25506 |
| 28 | 28476 |
| 29 | 31668 |
| 30 | 35090 |
| 31 | 38750 |
| 32 | 42656 |
| 33 | 46816 |
| 34 | 51238 |
| 35 | 55930 |
| 36 | 60900 |
| 37 | 66156 |
| 38 | 71706 |
| 39 | 77558 |
| 40 | 83720 |