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 | 17907119 |
| 2 | 18828809 |
| 3 | 31692569 |
| 4 | 73421039 |
| 5 | 179467469 |
| 6 | 322757819 |
| 7 | 337567229 |
| 8 | 627702389 |
| 9 | 975314339 |
| 10 | 2537636009 |
| 11 | 2722271369 |
| 12 | 3328653509 |
| 13 | 3917646809 |
| 14 | 5529412349 |
| 15 | 6369847469 |
| 16 | 11179199849 |
| 17 | 11201693579 |
| 18 | 11363832479 |
| 19 | 13442120999 |
| 20 | 16781760449 |
| 21 | 19751331599 |
| 22 | 20002320029 |