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 | 1 |
| 2 | 5 |
| 3 | 25 |
| 4 | 55 |
| 5 | 125 |
| 6 | 275 |
| 7 | 555 |
| 8 | 625 |
| 9 | 1375 |
| 10 | 2775 |
| 11 | 3025 |
| 12 | 3125 |
| 13 | 5555 |
| 14 | 6875 |
| 15 | 13875 |
| 16 | 15125 |
| 17 | 15625 |
| 18 | 27775 |
| 19 | 30525 |
| 20 | 34375 |
| 21 | 55555 |
| 22 | 69375 |
| 23 | 75625 |
| 24 | 78125 |
| 25 | 138875 |
| 26 | 152625 |
| 27 | 166375 |
| 28 | 171875 |
| 29 | 277775 |
| 30 | 305525 |
| 31 | 308025 |
| 32 | 346875 |
| 33 | 378125 |
| 34 | 390625 |
| 35 | 555555 |
| 36 | 694375 |
| 37 | 763125 |