A205031 s(k)-s(j), where (s(k),s(j)) is the least pair of oblong numbers for which n divides their difference.

4, 4, 6, 4, 10, 6, 14, 8, 18, 10, 22, 24, 26, 14, 30, 16, 34, 18, 38, 40, 42, 22, 46, 24, 50, 26, 54, 28, 58, 30, 62, 32, 66, 34, 70, 36, 74, 38, 78, 40, 82, 42, 86, 44, 90, 46, 94, 48, 98, 50, 102, 52, 106, 54, 110, 112, 114, 58, 118, 60