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 | 157115 |
| 2 | 314229 |
| 3 | 628457 |
| 4 | 1256913 |
| 5 | 2513825 |
| 6 | 5027649 |
| 7 | 10055297 |
| 8 | 20110593 |
| 9 | 40221185 |
| 10 | 80442369 |
| 11 | 160884737 |
| 12 | 321769473 |
| 13 | 643538945 |
| 14 | 1287077889 |
| 15 | 2574155777 |
| 16 | 5148311553 |
| 17 | 10296623105 |
| 18 | 20593246209 |
| 19 | 41186492417 |
| 20 | 82372984833 |
| 21 | 164745969665 |
| 22 | 329491939329 |