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) |
|---|---|
| 0 | 1 |
| 1 | 441 |
| 2 | 4225 |
| 3 | 17689 |
| 4 | 50625 |
| 5 | 116281 |
| 6 | 231361 |
| 7 | 416025 |
| 8 | 693889 |
| 9 | 1092025 |
| 10 | 1640961 |
| 11 | 2374681 |
| 12 | 3330625 |
| 13 | 4549689 |
| 14 | 6076225 |
| 15 | 7958041 |
| 16 | 10246401 |
| 17 | 12996025 |
| 18 | 16265089 |
| 19 | 20115225 |
| 20 | 24611521 |
| 21 | 29822521 |
| 22 | 35820225 |
| 23 | 42680089 |
| 24 | 50481025 |
| 25 | 59305401 |