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 | 16 |
| 2 | 100 |
| 3 | 668 |
| 4 | 4928 |
| 5 | 38404 |
| 6 | 313752 |
| 7 | 2658344 |
| 8 | 23046512 |
| 9 | 203394764 |
| 10 | 1820205436 |
| 11 | 16472216912 |
| 12 | 150431552012 |
| 13 | 1384262129028 |
| 14 | 12819767598972 |
| 15 | 119378281788240 |
| 16 | 1116953361826164 |