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 | 25 |
| 2 | 225 |
| 3 | 7225 |
| 4 | 27225 |
| 5 | 55225 |
| 6 | 235225 |
| 7 | 2772225 |
| 8 | 3553225 |
| 9 | 23377225 |
| 10 | 33235225 |
| 11 | 57532225 |
| 12 | 227557225 |
| 13 | 252333225 |
| 14 | 277722225 |
| 15 | 337273225 |
| 16 | 357777225 |
| 17 | 523723225 |
| 18 | 735223225 |
| 19 | 777573225 |
| 20 | 2523555225 |
| 21 | 3325252225 |
| 22 | 3377353225 |
| 23 | 5232352225 |
| 24 | 7333353225 |