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) |
|---|---|
| 10 | 1 |
| 11 | 1 |
| 12 | 7 |
| 13 | 34 |
| 14 | 158 |
| 15 | 655 |
| 16 | 2578 |
| 17 | 9619 |
| 18 | 34659 |
| 19 | 120966 |
| 20 | 412214 |
| 21 | 1375861 |
| 22 | 4516058 |
| 23 | 14611989 |
| 24 | 46712942 |
| 25 | 147798787 |
| 26 | 463512254 |
| 27 | 1442513910 |
| 28 | 4459548539 |
| 29 | 13706894100 |
| 30 | 41915906463 |
| 31 | 127607366453 |
| 32 | 386953440455 |
| 33 | 1169295277193 |
| 34 | 3522431890950 |
| 35 | 10581852932516 |
| 36 | 31711045921908 |