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 | 16 |
| 1 | 96 |
| 2 | 592 |
| 3 | 3680 |
| 4 | 22888 |
| 5 | 141776 |
| 6 | 872296 |
| 7 | 5320160 |
| 8 | 32116168 |
| 9 | 191634736 |
| 10 | 1128985544 |
| 11 | 6560592320 |
| 12 | 37577101096 |
| 13 | 212032652336 |
| 14 | 1178400630472 |
| 15 | 6450745788064 |
| 16 | 34795044655624 |
| 17 | 185041871051312 |
| 18 | 971039709861320 |
| 19 | 5033044804735360 |
| 20 | 25793494764933224 |
| 21 | 130834363186542320 |