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 | 1 |
| 2 | 25 |
| 3 | 72 |
| 4 | 142 |
| 5 | 235 |
| 6 | 351 |
| 7 | 490 |
| 8 | 652 |
| 9 | 837 |
| 10 | 1045 |
| 11 | 1276 |
| 12 | 1530 |
| 13 | 1807 |
| 14 | 2107 |
| 15 | 2430 |
| 16 | 2776 |
| 17 | 3145 |
| 18 | 3537 |
| 19 | 3952 |
| 20 | 4390 |
| 21 | 4851 |
| 22 | 5335 |
| 23 | 5842 |
| 24 | 6372 |
| 25 | 6925 |
| 26 | 7501 |
| 27 | 8100 |
| 28 | 8722 |
| 29 | 9367 |
| 30 | 10035 |
| 31 | 10726 |
| 32 | 11440 |
| 33 | 12177 |
| 34 | 12937 |
| 35 | 13720 |
| 36 | 14526 |
| 37 | 15355 |
| 38 | 16207 |
| 39 | 17082 |
| 40 | 17980 |