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 | 6 |
| 2 | 36 |
| 3 | 98 |
| 4 | 271 |
| 5 | 844 |
| 6 | 2706 |
| 7 | 8977 |
| 8 | 30168 |
| 9 | 102384 |
| 10 | 349069 |
| 11 | 1193648 |
| 12 | 4087980 |
| 13 | 14013419 |
| 14 | 48061824 |
| 15 | 164886926 |
| 16 | 565777111 |
| 17 | 1941543632 |
| 18 | 6663053798 |
| 19 | 22867234785 |
| 20 | 78480570100 |
| 21 | 269349014868 |
| 22 | 924424358989 |
| 23 | 3172699693492 |
| 24 | 10888986998392 |