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 | 13 |
| 2 | 229 |
| 3 | 1013 |
| 4 | 1741 |
| 5 | 39317 |
| 6 | 64013 |
| 7 | 74101 |
| 8 | 157477 |
| 9 | 438989 |
| 10 | 551381 |
| 11 | 830597 |
| 12 | 1906637 |
| 13 | 2000389 |
| 14 | 4096013 |
| 15 | 7077901 |
| 16 | 9261013 |
| 17 | 10941061 |
| 18 | 15625013 |
| 19 | 16003021 |
| 20 | 21024589 |
| 21 | 24897101 |
| 22 | 27000013 |
| 23 | 69934541 |
| 24 | 74088013 |
| 25 | 79507013 |
| 26 | 93576677 |
| 27 | 122023949 |