A091827 Least k such that k^n divides A000254(k).
6, 6, 12, 20, 20, 24, 36, 45, 48, 48, 60, 60, 72, 72, 72, 72, 80, 90, 90, 120, 120, 120, 120, 120, 120, 120, 120, 120, 144, 144, 144, 144, 144, 180, 180, 180, 180, 180, 180, 180, 180, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 360, 360
Offset: 1