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A070738
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Nonprimes n such that n^2 reduced modulo phi(n) = phi(n)^2 reduced modulo n.
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0
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1, 4, 8, 16, 18, 28, 30, 32, 36, 50, 54, 56, 64, 72, 75, 100, 102, 104, 108, 128, 144, 162, 200, 204, 208, 216, 234, 245, 250, 256, 288, 294, 306, 324, 400, 405, 408, 432, 486, 500, 512, 567, 576, 588, 612, 648, 693, 800, 864, 882, 900, 972, 990, 1000, 1024
(list; graph; refs; listen; history; internal format)
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