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 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 4 |
| 8 | 7 |
| 9 | 14 |
| 10 | 24 |
| 11 | 46 |
| 12 | 92 |
| 13 | 186 |
| 14 | 368 |
| 15 | 750 |
| 16 | 1529 |
| 17 | 3160 |
| 18 | 6510 |
| 19 | 13590 |
| 20 | 28374 |
| 21 | 59780 |
| 22 | 125732 |
| 23 | 266468 |
| 24 | 564188 |
| 25 | 1202842 |
| 26 | 2560106 |
| 27 | 5484304 |
| 28 | 11732400 |
| 29 | 25229068 |
| 30 | 54187918 |
| 31 | 116938702 |
| 32 | 252039411 |
| 33 | 545593378 |
| 34 | 1179545874 |
| 35 | 2560009400 |
| 36 | 5550315640 |
| 37 | 12075064432 |