Numbers m such that the equation phi(x) = m has even but no odd solutions.

A143510

Numbers m such that the equation phi(x) = m has even but no odd solutions.

Terms

    a(0) =16842752a(1) =33685504a(2) =67371008a(3) =134742016a(4) =269484032a(5) =538968064a(6) =1077936128a(7) =2155872256a(8) =4294967296a(9) =5827592192a(10) =8589934592a(11) =11655184384a(12) =17179869184a(13) =23310368768a(14) =34359738368a(15) =41702653952a(16) =46620737536a(17) =68719476736a(18) =80609411072a(19) =80811524096a(20) =83405307904

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