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 | 9499012067 |
| 2 | 4990120679 |
| 3 | 3040043189 |
| 4 | 1896233719 |
| 5 | 2337190679 |
| 6 | 9628724687 |
| 7 | 2510068721 |
| 8 | 8721400547 |
| 9 | 9681155879 |
| 10 | 5587948903 |
| 11 | 7564558769 |
| 12 | 9632356367 |
| 13 | 3235636709 |
| 14 | 3200805163 |
| 15 | 4445184059 |
| 16 | 3876314227 |
| 17 | 2276587939 |
| 18 | 1979084773 |
| 19 | 9420451591 |
| 20 | 9120818099 |
| 21 | 9345444877 |