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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 9 |
| 7 | 16 |
| 8 | 24 |
| 9 | 42 |
| 10 | 63 |
| 11 | 102 |
| 12 | 157 |
| 13 | 244 |
| 14 | 373 |
| 15 | 570 |
| 16 | 858 |
| 17 | 1290 |
| 18 | 1930 |
| 19 | 2858 |
| 20 | 4228 |
| 21 | 6208 |
| 22 | 9084 |
| 23 | 13216 |
| 24 | 19175 |
| 25 | 27666 |
| 26 | 39804 |
| 27 | 57020 |
| 28 | 81412 |
| 29 | 115820 |
| 30 | 164264 |
| 31 | 232178 |
| 32 | 327220 |
| 33 | 459796 |
| 34 | 644232 |
| 35 | 900214 |
| 36 | 1254554 |
| 37 | 1743896 |
| 38 | 2418071 |
| 39 | 3344896 |
| 40 | 4616026 |