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 | 12 |
| 2 | 79 |
| 3 | 408 |
| 4 | 1847 |
| 5 | 7698 |
| 6 | 30319 |
| 7 | 114606 |
| 8 | 419933 |
| 9 | 1501674 |
| 10 | 5266069 |
| 11 | 18174084 |
| 12 | 61892669 |
| 13 | 208424880 |
| 14 | 695179339 |
| 15 | 2299608732 |
| 16 | 7552444115 |
| 17 | 24648046806 |
| 18 | 79994460139 |
| 19 | 258339007890 |
| 20 | 830619734681 |
| 21 | 2660070154542 |
| 22 | 8488515938929 |
| 23 | 27000079296648 |
| 24 | 85629004867577 |