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 | 342225 |
| 2 | 280495504 |
| 3 | 1029447225 |
| 4 | 1148667664 |
| 5 | 1435045924 |
| 6 | 1596961444 |
| 7 | 1757705625 |
| 8 | 2177622225 |
| 9 | 14787776025 |
| 10 | 18114198921 |
| 11 | 32871503025 |
| 12 | 45018230625 |
| 13 | 150897287025 |
| 14 | 245485566225 |
| 15 | 272993710144 |
| 16 | 296006724225 |
| 17 | 705373218225 |
| 18 | 1126920249225 |
| 19 | 1329226832241 |
| 20 | 1358425215225 |