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 | 8 |
| 1 | 8 |
| 2 | 32 |
| 3 | 158 |
| 4 | 828 |
| 5 | 4408 |
| 6 | 23564 |
| 7 | 126106 |
| 8 | 675076 |
| 9 | 3614144 |
| 10 | 19349432 |
| 11 | 103593806 |
| 12 | 554625900 |
| 13 | 2969386480 |
| 14 | 15897666068 |
| 15 | 85113810058 |
| 16 | 455687062276 |
| 17 | 2439682811480 |
| 18 | 13061709929936 |
| 19 | 69930511268510 |
| 20 | 374397872321628 |