

A128995


For a number n, let r=n+1, s = the least number greater than r and coprime to nr; n is here if nrs, rsn and snr are all prime.


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3, 4, 5, 6, 9, 13, 14, 15, 19, 20, 26, 32, 35, 36, 42, 55, 68, 88, 89, 93, 118, 145, 155, 169, 172, 174, 186, 234, 259, 330, 356, 384, 405, 488, 494, 495, 530, 569, 594, 608, 660, 715, 726, 746, 763, 779, 825, 863, 1069, 1124, 1143, 1149, 1320, 1342, 1365
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