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 | 6 |
| 3 | 344 |
| 4 | 1475 |
| 5 | 3816 |
| 6 | 5463 |
| 7 | 18468 |
| 8 | 78894 |
| 9 | 515108 |
| 10 | 566932 |
| 11 | 1600370 |
| 12 | 14380856 |
| 13 | 27129564 |
| 14 | 28669993 |
| 15 | 31401775 |
| 16 | 39638108 |
| 17 | 2245196680 |
| 18 | 2878016306 |
| 19 | 5890364987 |
| 20 | 7838325300 |
| 21 | 23168759538 |
| 22 | 63226475740 |
| 23 | 121869542099 |