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 | 1 |
| 1 | 2 |
| 2 | 33 |
| 3 | 68 |
| 4 | 1121 |
| 5 | 2310 |
| 6 | 38081 |
| 7 | 78472 |
| 8 | 1293633 |
| 9 | 2665738 |
| 10 | 43945441 |
| 11 | 90556620 |
| 12 | 1492851361 |
| 13 | 3076259342 |
| 14 | 50713000833 |
| 15 | 104502261008 |
| 16 | 1722749176961 |
| 17 | 3550000614930 |
| 18 | 58522759015841 |
| 19 | 120595518646612 |
| 20 | 1988051057361633 |
| 21 | 4096697633369878 |
| 22 | 67535213191279681 |