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) |
|---|---|
| 3 | 3 |
| 4 | 5 |
| 5 | 15 |
| 6 | 25 |
| 7 | 119 |
| 8 | 81 |
| 9 | 504 |
| 10 | 311 |
| 11 | 1309 |
| 12 | 481 |
| 13 | 3601 |
| 14 | 1639 |
| 15 | 5985 |
| 16 | 3329 |
| 17 | 12070 |
| 18 | 4033 |
| 19 | 19418 |
| 20 | 11261 |
| 21 | 26019 |
| 22 | 18107 |
| 23 | 42872 |
| 24 | 16153 |
| 25 | 60900 |
| 26 | 38897 |
| 27 | 83970 |
| 28 | 54993 |
| 29 | 137460 |
| 30 | 38161 |
| 31 | 159650 |
| 32 | 97089 |
| 33 | 204930 |
| 34 | 136307 |
| 35 | 262010 |
| 36 | 144361 |
| 37 | 337810 |
| 38 | 223327 |
| 39 | 404508 |
| 40 | 292241 |
| 41 | 529310 |
| 42 | 243685 |
| 43 | 662071 |
| 44 | 441145 |
| 45 | 749385 |