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 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 4 |
| 5 | 6 |
| 6 | 5 |
| 7 | 8 |
| 8 | 21 |
| 9 | 36 |
| 10 | 45 |
| 11 | 66 |
| 12 | 128 |
| 13 | 224 |
| 14 | 330 |
| 15 | 497 |
| 16 | 851 |
| 17 | 1452 |
| 18 | 2287 |
| 19 | 3556 |
| 20 | 5826 |
| 21 | 9693 |
| 22 | 15624 |
| 23 | 24807 |
| 24 | 40126 |
| 25 | 65737 |
| 26 | 106584 |
| 27 | 171112 |
| 28 | 276160 |
| 29 | 448980 |
| 30 | 728201 |
| 31 | 1174985 |
| 32 | 1897380 |
| 33 | 3074733 |
| 34 | 4982688 |
| 35 | 8055918 |
| 36 | 13020029 |
| 37 | 21074012 |
| 38 | 34125561 |
| 39 | 55210580 |
| 40 | 89284541 |