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 | 3 |
| 2 | 33 |
| 3 | 903 |
| 4 | 46113 |
| 5 | 3784503 |
| 6 | 455538993 |
| 7 | 75603118503 |
| 8 | 16546026500673 |
| 9 | 4616979073434903 |
| 10 | 1599868423237443153 |
| 11 | 674014138103352845703 |
| 12 | 339274210193051498798433 |
| 13 | 201097637653063767131142903 |
| 14 | 138634566390566081044811718513 |