A064279 Number of ordered pairs a,b of elements in the cyclic group C_n such that the subgroup generated by the pair a,b is a proper subgroup of C_n.

0, 1, 1, 4, 1, 12, 1, 16, 9, 28, 1, 48, 1, 52, 33, 64, 1, 108, 1, 112, 57, 124, 1, 192, 25, 172, 81, 208, 1, 324, 1, 256, 129, 292, 73, 432, 1, 364, 177, 448, 1, 612, 1, 496, 297, 532, 1, 768, 49, 700, 297, 688, 1, 972, 145, 832, 369, 844, 1, 1296, 1, 964, 513, 1024