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 | 8 |
| 2 | 64 |
| 3 | 216 |
| 4 | 630 |
| 5 | 2156 |
| 6 | 7128 |
| 7 | 24990 |
| 8 | 87136 |
| 9 | 311040 |
| 10 | 1112150 |
| 11 | 4018716 |
| 12 | 14563584 |
| 13 | 53065350 |
| 14 | 193861408 |
| 15 | 710502760 |
| 16 | 2609417910 |
| 17 | 9603620076 |
| 18 | 35401092264 |
| 19 | 130688898510 |
| 20 | 483039609408 |
| 21 | 1787282764624 |
| 22 | 6619084515926 |
| 23 | 24532925650268 |