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 | 2 |
| 3 | 1094 |
| 4 | 2899 |
| 5 | 56817 |
| 6 | 155286 |
| 7 | 3268191 |
| 8 | 9099642 |
| 9 | 12834909238 |
| 10 | 36503886401 |
| 11 | 57494353262135 |
| 12 | 165465534734914 |
| 13 | 278352404864419302 |
| 14 | 807141068080455861 |
| 15 | 19766110689810556002 |
| 16 | 57478249717507080819 |
| 17 | 1418604378354657012789 |