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A068893
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Nonpalindromic n and its digit reversal both have the same prime signature.
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1
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13, 15, 17, 26, 31, 37, 39, 51, 58, 62, 71, 73, 79, 85, 93, 97, 107, 113, 115, 117, 122, 123, 129, 143, 149, 155, 157, 158, 159, 165, 167, 169, 177, 178, 179, 183, 185, 187, 199, 203, 205, 221, 226, 246, 265, 285, 286, 294, 302, 311, 314, 319, 321, 326, 327
(list; graph; refs; listen; history; internal format)
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