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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 14 |
| 5 | 17 |
| 6 | 694 |
| 7 | 711 |
| 8 | 7093 |
| 9 | 29083 |
| 10 | 65259 |
| 11 | 94342 |
| 12 | 1480389 |
| 13 | 3055120 |
| 14 | 38141829 |
| 15 | 41196949 |
| 16 | 903277758 |
| 17 | 944474707 |
| 18 | 16959347777 |
| 19 | 882830559111 |
| 20 | 2665451025110 |
| 21 | 3548281584221 |
| 22 | 23955140530436 |