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 | 10 |
| 2 | 18 |
| 3 | 34 |
| 4 | 64 |
| 5 | 122 |
| 6 | 232 |
| 7 | 444 |
| 8 | 848 |
| 9 | 1626 |
| 10 | 3112 |
| 11 | 5972 |
| 12 | 11442 |
| 13 | 21964 |
| 14 | 42106 |
| 15 | 80832 |
| 16 | 155010 |
| 17 | 297570 |
| 18 | 570760 |
| 19 | 1095620 |
| 20 | 2101752 |
| 21 | 4034252 |
| 22 | 7739690 |
| 23 | 14855342 |
| 24 | 28501710 |
| 25 | 54703004 |
| 26 | 104959000 |
| 27 | 201439550 |
| 28 | 386516750 |
| 29 | 741790648 |
| 30 | 1423365002 |
| 31 | 2731617694 |