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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 7 |
| 8 | 12 |
| 9 | 19 |
| 10 | 32 |
| 11 | 56 |
| 12 | 96 |
| 13 | 165 |
| 14 | 290 |
| 15 | 512 |
| 16 | 902 |
| 17 | 1601 |
| 18 | 2862 |
| 19 | 5124 |
| 20 | 9198 |
| 21 | 16585 |
| 22 | 29990 |
| 23 | 54336 |
| 24 | 98702 |
| 25 | 179742 |
| 26 | 327942 |
| 27 | 599432 |
| 28 | 1097756 |
| 29 | 2013737 |
| 30 | 3699596 |
| 31 | 6806866 |
| 32 | 12541518 |
| 33 | 23137270 |
| 34 | 42736850 |
| 35 | 79031394 |
| 36 | 146309968 |
| 37 | 271142469 |
| 38 | 502978944 |
| 39 | 933921458 |
| 40 | 1735634266 |