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 | 201601 |
| 2 | 224051 |
| 3 | 249001 |
| 4 | 2244551 |
| 5 | 2494501 |
| 6 | 4467101 |
| 7 | 4964551 |
| 8 | 19957601 |
| 9 | 22180051 |
| 10 | 22225051 |
| 11 | 22449551 |
| 12 | 24700001 |
| 13 | 24949501 |
| 14 | 24990001 |
| 15 | 42632101 |
| 16 | 42654551 |
| 17 | 47379551 |
| 18 | 47404501 |
| 19 | 49735051 |
| 20 | 90518849 |
| 21 | 98982601 |
| 22 | 100598899 |
| 23 | 111801449 |
| 24 | 124251499 |
| 25 | 199557601 |
| 26 | 221780051 |
| 27 | 222200551 |
| 28 | 247445501 |