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 | 5 |
| 2 | 3001 |
| 3 | 120041 |
| 4 | 532501 |
| 5 | 720241 |
| 6 | 2160721 |
| 7 | 3937501 |
| 8 | 9375001 |
| 9 | 16505501 |
| 10 | 120040001 |
| 11 | 158453021 |
| 12 | 165055001 |
| 13 | 202567501 |
| 14 | 289312501 |
| 15 | 562500061 |
| 16 | 900307501 |
| 17 | 985937501 |
| 18 | 1500512501 |
| 19 | 1512504701 |
| 20 | 3169060421 |
| 21 | 3301100021 |
| 22 | 3908604433 |
| 23 | 3993757501 |