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 | 1 |
| 3 | 12 |
| 4 | 49 |
| 5 | 132 |
| 6 | 289 |
| 7 | 552 |
| 8 | 961 |
| 9 | 1560 |
| 10 | 2401 |
| 11 | 3540 |
| 12 | 5041 |
| 13 | 6972 |
| 14 | 9409 |
| 15 | 12432 |
| 16 | 16129 |
| 17 | 20592 |
| 18 | 25921 |
| 19 | 32220 |
| 20 | 39601 |
| 21 | 48180 |
| 22 | 58081 |
| 23 | 69432 |
| 24 | 82369 |
| 25 | 97032 |
| 26 | 113569 |
| 27 | 132132 |
| 28 | 152881 |
| 29 | 175980 |
| 30 | 201601 |
| 31 | 229920 |
| 32 | 261121 |
| 33 | 295392 |
| 34 | 332929 |
| 35 | 373932 |
| 36 | 418609 |
| 37 | 467172 |
| 38 | 519841 |
| 39 | 576840 |
| 40 | 638401 |