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 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | 4 |
| 9 | 4 |
| 10 | 6 |
| 11 | 8 |
| 12 | 16 |
| 13 | 19 |
| 14 | 30 |
| 15 | 36 |
| 16 | 59 |
| 17 | 73 |
| 18 | 106 |
| 19 | 135 |
| 20 | 191 |
| 21 | 242 |
| 22 | 331 |
| 23 | 420 |
| 24 | 569 |
| 25 | 712 |
| 26 | 941 |
| 27 | 1183 |
| 28 | 1546 |
| 29 | 1931 |
| 30 | 2476 |
| 31 | 3087 |
| 32 | 3933 |
| 33 | 4872 |
| 34 | 6137 |
| 35 | 7568 |
| 36 | 9471 |
| 37 | 11629 |
| 38 | 14427 |
| 39 | 17647 |
| 40 | 21758 |
| 41 | 26499 |
| 42 | 32470 |
| 43 | 39393 |
| 44 | 48030 |
| 45 | 58028 |
| 46 | 70385 |
| 47 | 84749 |
| 48 | 102348 |
| 49 | 122794 |
| 50 | 147633 |
| 51 | 176554 |