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A123754 Positive numbers of the form 4*n^2-1 which are not semiprimes. +0
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3, 63, 99, 195, 255, 399, 483, 575, 675, 783, 1023, 1155, 1295, 1443, 1599, 1935, 2115, 2303, 2499, 2703, 2915, 3135, 3363, 3843, 4095, 4355, 4623, 4899, 5475, 5775, 6083, 6399, 6723, 7055, 7395, 7743, 8099, 8463, 8835, 9215, 9603, 9999, 10815 (list; graph; listen)
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Last modified December 6 13:45 EST 2009. Contains 170429 sequences.


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