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 | 6 |
| 2 | 33 |
| 3 | 182 |
| 4 | 997 |
| 5 | 5570 |
| 6 | 30946 |
| 7 | 171851 |
| 8 | 955316 |
| 9 | 5308160 |
| 10 | 29497088 |
| 11 | 163916530 |
| 12 | 910869797 |
| 13 | 5061672943 |
| 14 | 28127490455 |
| 15 | 156303166524 |
| 16 | 868569845751 |
| 17 | 4826603668246 |
| 18 | 26821221189069 |
| 19 | 149044329620412 |
| 20 | 828232684722634 |