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 | 12 |
| 2 | 144 |
| 3 | 1011 |
| 4 | 6478 |
| 5 | 44879 |
| 6 | 321393 |
| 7 | 2276625 |
| 8 | 15986104 |
| 9 | 112334542 |
| 10 | 790951091 |
| 11 | 5570201912 |
| 12 | 39212133425 |
| 13 | 276007394747 |
| 14 | 1942896002325 |
| 15 | 13677110916246 |
| 16 | 96279937841588 |
| 17 | 677755568854937 |
| 18 | 4771010567436598 |
| 19 | 33585249323714265 |