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 | 2 |
| 3 | 3 |
| 4 | 15 |
| 5 | 87 |
| 6 | 255 |
| 7 | 11759 |
| 8 | 26279 |
| 9 | 39455 |
| 10 | 43919 |
| 11 | 65535 |
| 12 | 112895 |
| 13 | 443807 |
| 14 | 1347455 |
| 15 | 1464911 |
| 16 | 1568255 |
| 17 | 1604559 |
| 18 | 1968095 |
| 19 | 2441559 |
| 20 | 5948799 |
| 21 | 16210655 |
| 22 | 39624767 |
| 23 | 39839039 |
| 24 | 59187455 |
| 25 | 81624279 |
| 26 | 83623935 |
| 27 | 251009695 |
| 28 | 256685439 |
| 29 | 338979839 |
| 30 | 434357967 |
| 31 | 455345855 |
| 32 | 471783935 |
| 33 | 487722815 |
| 34 | 518291135 |
| 35 | 596835839 |