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 | 3 |
| 2 | 111 |
| 3 | 2385 |
| 4 | 52186 |
| 5 | 1154119 |
| 6 | 25448809 |
| 7 | 561487456 |
| 8 | 12387396391 |
| 9 | 273289411333 |
| 10 | 6029284136868 |
| 11 | 133017439433103 |
| 12 | 2934617106201383 |
| 13 | 64743220889823228 |
| 14 | 1428358285117311045 |
| 15 | 31512293679807784965 |
| 16 | 695220984328633501278 |