Numbers k such that phi(6k) = phi(6k+2), where phi is Euler's totient function A000010.

Terms

a(0) =268a(1) =723a(2) =9718a(3) =9858a(4) =13498a(5) =15738a(6) =35898a(7) =60363a(8) =75168a(9) =75973a(10) =87208a(11) =88888a(12) =98198a(13) =126848a(14) =135368a(15) =141093a(16) =161268a(17) =221223a(18) =233788a(19) =301513a(20) =328358a(21) =330633a(22) =419148a(23) =507648a(24) =527928a(25) =543468a(26) =551238a(27) =556418a(28) =586018a(29) =725958