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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 4 |
| 5 | 9 |
| 6 | 18 |
| 7 | 30 |
| 8 | 48 |
| 9 | 70 |
| 10 | 100 |
| 11 | 135 |
| 12 | 180 |
| 13 | 231 |
| 14 | 294 |
| 15 | 364 |
| 16 | 448 |
| 17 | 540 |
| 18 | 648 |
| 19 | 765 |
| 20 | 900 |
| 21 | 1045 |
| 22 | 1210 |
| 23 | 1386 |
| 24 | 1584 |
| 25 | 1794 |
| 26 | 2028 |
| 27 | 2275 |
| 28 | 2548 |
| 29 | 2835 |
| 30 | 3150 |
| 31 | 3480 |
| 32 | 3840 |
| 33 | 4216 |
| 34 | 4624 |
| 35 | 5049 |
| 36 | 5508 |
| 37 | 5985 |
| 38 | 6498 |
| 39 | 7030 |
| 40 | 7600 |
| 41 | 8190 |
| 42 | 8820 |
| 43 | 9471 |
| 44 | 10164 |
| 45 | 10879 |
| 46 | 11638 |
| 47 | 12420 |
| 48 | 13248 |