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) |
|---|---|
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 21 |
| 6 | 15 |
| 7 | 91 |
| 8 | 246 |
| 9 | 429 |
| 10 | 1005 |
| 11 | 399 |
| 12 | 3094 |
| 13 | 3045 |
| 14 | 21099 |
| 15 | 41155 |
| 16 | 43059 |
| 17 | 404754 |
| 18 | 214230 |
| 19 | 569130 |
| 20 | 182919 |
| 21 | 2190279 |
| 22 | 860574 |
| 23 | 9361374 |
| 24 | 8042479 |
| 25 | 33440551 |
| 26 | 36915670 |
| 27 | 11993466 |
| 28 | 287638530 |
| 29 | 182528031 |
| 30 | 697126530 |
| 31 | 78278655 |
| 32 | 3263415285 |
| 33 | 6941299170 |
| 34 | 25856763139 |
| 35 | 32968406926 |
| 36 | 13803374706 |