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 | 0 |
| 2 | 1 |
| 3 | 5 |
| 4 | 25 |
| 5 | 76 |
| 6 | 376 |
| 7 | 500 |
| 8 | 625 |
| 9 | 876 |
| 10 | 1876 |
| 11 | 2500 |
| 12 | 5001 |
| 13 | 5625 |
| 14 | 9376 |
| 15 | 15625 |
| 16 | 25001 |
| 17 | 40625 |
| 18 | 50001 |
| 19 | 62500 |
| 20 | 65625 |
| 21 | 71876 |
| 22 | 75001 |
| 23 | 90625 |
| 24 | 109376 |
| 25 | 171876 |
| 26 | 265625 |
| 27 | 375001 |
| 28 | 390625 |
| 29 | 500001 |
| 30 | 765625 |
| 31 | 875001 |
| 32 | 890625 |
| 33 | 1171876 |
| 34 | 2265625 |
| 35 | 2890625 |
| 36 | 4062500 |
| 37 | 4375001 |
| 38 | 5000001 |