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) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 9 |
| 5 | 16 |
| 6 | 31 |
| 7 | 58 |
| 8 | 112 |
| 9 | 211 |
| 10 | 411 |
| 11 | 781 |
| 12 | 1526 |
| 13 | 2923 |
| 14 | 5721 |
| 15 | 11023 |
| 16 | 21610 |
| 17 | 41821 |
| 18 | 82112 |
| 19 | 159460 |
| 20 | 313503 |
| 21 | 610531 |
| 22 | 1201721 |
| 23 | 2345734 |
| 24 | 4621899 |
| 25 | 9039472 |
| 26 | 17827054 |
| 27 | 34923997 |
| 28 | 68930585 |
| 29 | 135231649 |
| 30 | 267104311 |
| 31 | 524673184 |
| 32 | 1036989265 |
| 33 | 2039191564 |
| 34 | 4032728190 |
| 35 | 7937870407 |