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 | 1 |
| 1 | 1 |
| 2 | 6 |
| 3 | 111 |
| 4 | 2666 |
| 5 | 70146 |
| 6 | 1949156 |
| 7 | 56267133 |
| 8 | 1670963202 |
| 9 | 50720602314 |
| 10 | 1566629938776 |
| 11 | 49080774275121 |
| 12 | 1555873464248076 |
| 13 | 49814409137161480 |
| 14 | 1608523756282054800 |
| 15 | 52323002586904505427 |
| 16 | 1712956041168844662002 |