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 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 17 |
| 5 | 36 |
| 6 | 82 |
| 7 | 169 |
| 8 | 373 |
| 9 | 760 |
| 10 | 1646 |
| 11 | 3334 |
| 12 | 7130 |
| 13 | 14392 |
| 14 | 30500 |
| 15 | 61429 |
| 16 | 129293 |
| 17 | 260016 |
| 18 | 544342 |
| 19 | 1093546 |
| 20 | 2279470 |
| 21 | 4575736 |
| 22 | 9504188 |
| 23 | 19067162 |
| 24 | 39486402 |
| 25 | 79180816 |
| 26 | 163561932 |
| 27 | 327866764 |
| 28 | 675791828 |
| 29 | 1354258096 |
| 30 | 2786074952 |
| 31 | 5581844749 |
| 32 | 11464229693 |
| 33 | 22963817056 |
| 34 | 47094437222 |
| 35 | 94318519234 |
| 36 | 193174606118 |