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 | 2 |
| 2 | 8 |
| 3 | 68 |
| 4 | 1118 |
| 5 | 2273 |
| 6 | 197468 |
| 7 | 1728998 |
| 8 | 1728998 |
| 9 | 447914738 |
| 10 | 10152454583 |
| 11 | 1313795640428 |
| 12 | 97783391392958 |
| 13 | 5726413266646343 |
| 14 | 38433316595821418 |
| 15 | 15103232990013860963 |
| 16 | 943894249589930135768 |
| 17 | 52858423703753671390658 |
| 18 | 932521283899305953765183 |
| 19 | 8790842834979573009644273 |