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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 19 |
| 6 | 37 |
| 7 | 74 |
| 8 | 147 |
| 9 | 293 |
| 10 | 586 |
| 11 | 1172 |
| 12 | 2343 |
| 13 | 4686 |
| 14 | 9371 |
| 15 | 18742 |
| 16 | 37484 |
| 17 | 74967 |
| 18 | 149933 |
| 19 | 299866 |
| 20 | 599731 |
| 21 | 1199461 |
| 22 | 2398922 |
| 23 | 4797844 |
| 24 | 9595688 |
| 25 | 19191376 |
| 26 | 38382751 |
| 27 | 76765501 |
| 28 | 153531001 |
| 29 | 307062002 |
| 30 | 614124003 |
| 31 | 1228248006 |
| 32 | 2456496012 |
| 33 | 4912992024 |
| 34 | 9825984047 |