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 | 3 |
| 3 | 16 |
| 4 | 158 |
| 5 | 1796 |
| 6 | 24250 |
| 7 | 372656 |
| 8 | 6429927 |
| 9 | 122956714 |
| 10 | 2581840735 |
| 11 | 59084565968 |
| 12 | 1464445686726 |
| 13 | 39101805324620 |
| 14 | 1119446453417490 |
| 15 | 34220008384633264 |
| 16 | 1112764183812405300 |
| 17 | 38362648544330997488 |
| 18 | 1397884269388233025156 |