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 | 20207 |
| 2 | 181226 |
| 3 | 552276 |
| 4 | 1969008 |
| 5 | 4428300 |
| 6 | 10703592 |
| 7 | 30843448 |
| 8 | 58052742 |
| 9 | 124920600 |
| 10 | 234340458 |
| 11 | 360837752 |
| 12 | 561553608 |
| 13 | 910405144 |
| 14 | 1509473242 |
| 15 | 2207061100 |
| 16 | 3327841200 |
| 17 | 4713875058 |
| 18 | 6072022352 |
| 19 | 8304482450 |
| 20 | 10893397986 |