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 | 625 |
| 3 | 12468 |
| 4 | 244325 |
| 5 | 4827482 |
| 6 | 95527856 |
| 7 | 1889730415 |
| 8 | 37378616643 |
| 9 | 739356161720 |
| 10 | 14624722337624 |
| 11 | 289281704602147 |
| 12 | 5722081129193560 |
| 13 | 113184543292907805 |
| 14 | 2238825594019420023 |
| 15 | 44284668170957511026 |