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) |
|---|---|
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 5 |
| 9 | 7 |
| 10 | 12 |
| 11 | 18 |
| 12 | 27 |
| 13 | 42 |
| 14 | 64 |
| 15 | 96 |
| 16 | 146 |
| 17 | 219 |
| 18 | 327 |
| 19 | 491 |
| 20 | 730 |
| 21 | 1084 |
| 22 | 1608 |
| 23 | 2376 |
| 24 | 3500 |
| 25 | 5154 |
| 26 | 7563 |
| 27 | 11076 |
| 28 | 16193 |
| 29 | 23625 |
| 30 | 34395 |
| 31 | 50005 |
| 32 | 72550 |
| 33 | 105089 |
| 34 | 151984 |
| 35 | 219448 |
| 36 | 316362 |
| 37 | 455434 |
| 38 | 654661 |
| 39 | 939736 |
| 40 | 1347137 |
| 41 | 1928593 |
| 42 | 2757449 |
| 43 | 3937675 |