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 | 44 |
| 3 | 688 |
| 4 | 12010 |
| 5 | 109722 |
| 6 | 1620034 |
| 7 | 13535280 |
| 8 | 175905310 |
| 9 | 1449655468 |
| 10 | 17198428572 |
| 11 | 142545533336 |
| 12 | 1580868297042 |
| 13 | 13246916541978 |
| 14 | 139620415865920 |
| 15 | 1183338916049852 |
| 16 | 11997107474280224 |
| 17 | 102719325162193010 |
| 18 | 1010824101911587178 |