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 | 2 |
| 1 | 26 |
| 2 | 160 |
| 3 | 784 |
| 4 | 3152 |
| 5 | 11290 |
| 6 | 36556 |
| 7 | 110012 |
| 8 | 310482 |
| 9 | 832224 |
| 10 | 2131072 |
| 11 | 5249356 |
| 12 | 12488368 |
| 13 | 28816368 |
| 14 | 64676460 |
| 15 | 141598304 |
| 16 | 303031202 |
| 17 | 635197072 |
| 18 | 1306210848 |
| 19 | 2639071792 |
| 20 | 5245173264 |
| 21 | 10266881562 |
| 22 | 19811351308 |
| 23 | 37720810240 |
| 24 | 70922550372 |
| 25 | 131777935396 |
| 26 | 242124952896 |