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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 95 |
| 3 | 5595 |
| 4 | 484729 |
| 5 | 55545735 |
| 6 | 7923937307 |
| 7 | 1353285904971 |
| 8 | 269240651261153 |
| 9 | 61157779792168059 |
| 10 | 15617503320899550135 |
| 11 | 4429016799173481942427 |
| 12 | 1381112305978592892946825 |
| 13 | 469689278931628969590283855 |
| 14 | 173002815169302537782725771395 |