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 | 701 |
| 2 | 7001 |
| 3 | 10007 |
| 4 | 10243 |
| 5 | 20347 |
| 6 | 70001 |
| 7 | 97001 |
| 8 | 202757 |
| 9 | 306749 |
| 10 | 379499 |
| 11 | 700001 |
| 12 | 997001 |
| 13 | 1002247 |
| 14 | 1070021 |
| 15 | 3317257 |
| 16 | 3346507 |
| 17 | 9536249 |
| 18 | 9970001 |
| 19 | 10095247 |
| 20 | 20470501 |
| 21 | 21095021 |
| 22 | 22144979 |
| 23 | 94925771 |
| 24 | 100000007 |
| 25 | 100099501 |
| 26 | 104933743 |
| 27 | 202520347 |
| 28 | 300191597 |