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 | 2 |
| 2 | 8 |
| 3 | 16 |
| 4 | 64 |
| 5 | 106 |
| 6 | 324 |
| 7 | 696 |
| 8 | 1856 |
| 9 | 4046 |
| 10 | 10240 |
| 11 | 19084 |
| 12 | 49152 |
| 13 | 98110 |
| 14 | 218140 |
| 15 | 464084 |
| 16 | 1047744 |
| 17 | 2123446 |
| 18 | 4718592 |
| 19 | 9632740 |
| 20 | 20666444 |