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) |
|---|---|
| 2 | 1 |
| 3 | 7 |
| 4 | 97 |
| 5 | 4111 |
| 6 | 532269 |
| 7 | 212372937 |
| 8 | 263708907211 |
| 9 | 1013068026356375 |
| 10 | 11955420069208095719 |
| 11 | 432101605951906251627393 |
| 12 | 47778407166747833830058004149 |
| 13 | 16149888968763663448192636077980753 |
| 14 | 16675786862526496319891707194153887550751 |
| 15 | 52568166380872328447478940416604864445574575709 |