A074253 Numbers n such that the sum of squarefree numbers from the smallest prime factor of n to the largest prime factor of n is a square.

1, 111, 159, 299, 323, 333, 477, 555, 777, 793, 795, 913, 922, 999, 1113, 1221, 1431, 1443, 1665, 1749, 1844, 1887, 2067, 2109, 2331, 2385, 2553, 2703, 2766, 2775, 2867, 2993, 2997, 3021, 3219, 3339, 3441, 3657, 3663, 3688, 3885, 3887, 3975, 4107, 4293