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 | 0 |
| 3 | 0 |
| 4 | 404 |
| 5 | 2140 |
| 6 | 6380 |
| 7 | 13220 |
| 8 | 22996 |
| 9 | 35366 |
| 10 | 50330 |
| 11 | 67888 |
| 12 | 88040 |
| 13 | 110786 |
| 14 | 136126 |
| 15 | 164060 |
| 16 | 194588 |
| 17 | 227710 |
| 18 | 263426 |
| 19 | 301736 |
| 20 | 342640 |
| 21 | 386138 |
| 22 | 432230 |
| 23 | 480916 |
| 24 | 532196 |
| 25 | 586070 |
| 26 | 642538 |
| 27 | 701600 |
| 28 | 763256 |
| 29 | 827506 |
| 30 | 894350 |
| 31 | 963788 |
| 32 | 1035820 |
| 33 | 1110446 |