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 | 38225 |
| 2 | 275 |
| 3 | 76725 |
| 4 | 15345 |
| 5 | 691225 |
| 6 | 480051 |
| 7 | 37947843 |
| 8 | 325211285 |
| 9 | 65042257 |
| 10 | 1805570819 |
| 11 | 3477490925 |
| 12 | 17504957025 |
| 13 | 5834985675 |
| 14 | 17582877081 |
| 15 | 45778125899 |
| 16 | 131914344771 |
| 17 | 43971448257 |
| 18 | 1073579479975 |
| 19 | 1579005333125 |
| 20 | 315801066625 |