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 | 4 |
| 2 | 62 |
| 3 | 885229 |
| 4 | 1246986214 |
| 5 | 6411178063 |
| 6 | 12726051979 |
| 7 | 107213343921600529 |
| 8 | 2147942208584833933 |
| 9 | 10354578286673927897 |
| 10 | 58980651512479169892243191 |
| 11 | 2180545853785440701368914883 |
| 12 | 16670504896204082873702933353 |
| 13 | 1970627022928300844150934760319 |
| 14 | 8848738313604306954943751816182969 |