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 | 2 |
| 1 | 56 |
| 2 | 252 |
| 3 | 688 |
| 4 | 1514 |
| 5 | 2664 |
| 6 | 4396 |
| 7 | 7056 |
| 8 | 9828 |
| 9 | 13720 |
| 10 | 19264 |
| 11 | 24336 |
| 12 | 31502 |
| 13 | 40880 |
| 14 | 48780 |
| 15 | 59584 |
| 16 | 74592 |
| 17 | 86688 |
| 18 | 101308 |
| 19 | 123088 |
| 20 | 137844 |
| 21 | 159016 |
| 22 | 190764 |
| 23 | 207648 |
| 24 | 235986 |
| 25 | 275184 |
| 26 | 297756 |
| 27 | 335664 |
| 28 | 384160 |
| 29 | 410760 |
| 30 | 453964 |
| 31 | 520816 |
| 32 | 553896 |
| 33 | 601528 |