A344882 Numbers k that have such a proper divisor d for which A011772(d) = A011772(k).
6, 10, 18, 21, 24, 26, 28, 34, 36, 39, 40, 50, 55, 57, 58, 60, 66, 68, 74, 75, 78, 82, 88, 92, 93, 96, 98, 100, 105, 106, 111, 120, 122, 124, 126, 129, 132, 136, 138, 144, 146, 147, 150, 153, 155, 156, 160, 162, 164, 168, 171, 176, 178, 183, 188, 189, 190, 194, 196, 198, 201, 202, 203, 205, 208, 210, 216, 218, 219, 222
Offset: 1