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A082540
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Number of ordered quadruples (a,b,c,d) with gcd(a,b,c,d)=1 (1<= {a,b,c,d} <= n.).
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1
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1, 15, 79, 239, 607, 1199, 2303, 3823, 6223, 9279, 13919, 19183, 27007, 35743, 47519, 60735, 78719, 97103, 122447, 148527, 181839, 216959, 262543, 306863, 365343, 423855, 495855, 569055, 661679, 748527, 862047, 972191, 1104831, 1237247
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