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 | 1 |
| 1 | 3 |
| 2 | 14 |
| 3 | 36 |
| 4 | 47 |
| 5 | 246 |
| 6 | 644 |
| 7 | 843 |
| 8 | 4414 |
| 9 | 11556 |
| 10 | 15127 |
| 11 | 79206 |
| 12 | 207364 |
| 13 | 271443 |
| 14 | 1421294 |
| 15 | 3720996 |
| 16 | 4870847 |
| 17 | 25504086 |
| 18 | 66770564 |
| 19 | 87403803 |
| 20 | 457652254 |
| 21 | 1198149156 |
| 22 | 1568397607 |
| 23 | 8212236486 |
| 24 | 21499914244 |
| 25 | 28143753123 |
| 26 | 147362604494 |