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 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 14 |
| 7 | 25 |
| 8 | 43 |
| 9 | 78 |
| 10 | 139 |
| 11 | 246 |
| 12 | 437 |
| 13 | 779 |
| 14 | 1384 |
| 15 | 2461 |
| 16 | 4376 |
| 17 | 7783 |
| 18 | 13840 |
| 19 | 24612 |
| 20 | 43765 |
| 21 | 77828 |
| 22 | 138400 |
| 23 | 246114 |
| 24 | 437658 |
| 25 | 778280 |
| 26 | 1383998 |
| 27 | 2461136 |
| 28 | 4376586 |
| 29 | 7782795 |
| 30 | 13839982 |
| 31 | 24611356 |
| 32 | 43765867 |
| 33 | 77827942 |
| 34 | 138399825 |
| 35 | 246113559 |