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 | 7 |
| 3 | 17 |
| 4 | 41 |
| 5 | 95 |
| 6 | 223 |
| 7 | 523 |
| 8 | 1201 |
| 9 | 2781 |
| 10 | 6445 |
| 11 | 14731 |
| 12 | 33859 |
| 13 | 77899 |
| 14 | 177523 |
| 15 | 406115 |
| 16 | 929825 |
| 17 | 2114387 |
| 18 | 4821367 |
| 19 | 11001423 |
| 20 | 24974353 |
| 21 | 56813401 |
| 22 | 129315249 |
| 23 | 293157759 |
| 24 | 665688917 |
| 25 | 1512325105 |
| 26 | 3424615395 |