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 | 3 |
| 3 | 14 |
| 4 | 98 |
| 5 | 944 |
| 6 | 11642 |
| 7 | 175108 |
| 8 | 3108310 |
| 9 | 63601168 |
| 10 | 1473864722 |
| 11 | 38152990484 |
| 12 | 1091172974102 |
| 13 | 34169139856024 |
| 14 | 1162736848398010 |
| 15 | 42723615842296540 |
| 16 | 1685853467536076798 |
| 17 | 71101435046807892512 |
| 18 | 3191843270961299033762 |
| 19 | 151956292916451992949028 |