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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 59 |
| 3 | 1040 |
| 4 | 7014 |
| 5 | 29580 |
| 6 | 94105 |
| 7 | 247884 |
| 8 | 570220 |
| 9 | 1184424 |
| 10 | 2271735 |
| 11 | 4087160 |
| 12 | 6977234 |
| 13 | 11399700 |
| 14 | 17945109 |
| 15 | 27360340 |
| 16 | 40574040 |
| 17 | 58723984 |
| 18 | 83186355 |
| 19 | 115606944 |
| 20 | 157934270 |
| 21 | 212454620 |
| 22 | 281829009 |
| 23 | 369132060 |
| 24 | 477892804 |
| 25 | 612137400 |
| 26 | 776433775 |
| 27 | 975938184 |
| 28 | 1216443690 |