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 | 1 |
| 2 | 1006 |
| 3 | 1844 |
| 4 | 1943 |
| 5 | 2121 |
| 6 | 6730 |
| 7 | 9457 |
| 8 | 16986 |
| 9 | 26554 |
| 10 | 51607 |
| 11 | 190310 |
| 12 | 624191 |
| 13 | 982911 |
| 14 | 8532607 |
| 15 | 228180184 |
| 16 | 328852129 |
| 17 | 1087944970 |
| 18 | 3446300146 |
| 19 | 6297250622 |
| 20 | 13963928263 |
| 21 | 21739950459 |
| 22 | 22065516615 |
| 23 | 40578950043 |
| 24 | 147724913629 |
| 25 | 979260576959 |
| 26 | 988238658616 |
| 27 | 3024618853544 |