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 | 7 |
| 2 | 113 |
| 3 | 1327 |
| 4 | 15683 |
| 5 | 31397 |
| 6 | 31397 |
| 7 | 360653 |
| 8 | 1349533 |
| 9 | 1357333 |
| 10 | 17051887 |
| 11 | 20831323 |
| 12 | 47326913 |
| 13 | 436273291 |
| 14 | 3842610773 |
| 15 | 3842610773 |
| 16 | 22367084959 |
| 17 | 25056082087 |
| 18 | 25056082087 |
| 19 | 304599509051 |
| 20 | 1346294310749 |