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 | 1 |
| 2 | 28 |
| 3 | 234 |
| 4 | 896 |
| 5 | 3100 |
| 6 | 6552 |
| 7 | 16758 |
| 8 | 28672 |
| 9 | 56862 |
| 10 | 86800 |
| 11 | 160930 |
| 12 | 209664 |
| 13 | 371124 |
| 14 | 469224 |
| 15 | 725400 |
| 16 | 917504 |
| 17 | 1419568 |
| 18 | 1592136 |
| 19 | 2475738 |
| 20 | 2777600 |
| 21 | 3921372 |
| 22 | 4506040 |
| 23 | 6435814 |
| 24 | 6709248 |
| 25 | 9687500 |
| 26 | 10391472 |
| 27 | 13817466 |
| 28 | 15015168 |
| 29 | 20510308 |
| 30 | 20311200 |
| 31 | 28628190 |
| 32 | 29360128 |
| 33 | 37657620 |