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 | 5 |
| 4 | 26 |
| 5 | 84 |
| 6 | 222 |
| 7 | 488 |
| 8 | 946 |
| 9 | 1664 |
| 10 | 2723 |
| 11 | 4227 |
| 12 | 6277 |
| 13 | 8993 |
| 14 | 12514 |
| 15 | 16976 |
| 16 | 22538 |
| 17 | 29364 |
| 18 | 37649 |
| 19 | 47563 |
| 20 | 59321 |
| 21 | 73149 |
| 22 | 89254 |
| 23 | 107892 |
| 24 | 129308 |
| 25 | 153764 |
| 26 | 181547 |
| 27 | 212931 |
| 28 | 248223 |
| 29 | 287747 |
| 30 | 331780 |