6th power analog of Keith numbers.

Terms

a(0) =1a(1) =18a(2) =45a(3) =54a(4) =64a(5) =125a(6) =218a(7) =246a(8) =935a(9) =1125a(10) =6021a(11) =6866a(12) =7887a(13) =40210a(14) =89330a(15) =457625a(16) =577655a(17) =613385a(18) =640118a(19) =5200210a(20) =6809148a(21) =7293243a(22) =10013591a(23) =50980917a(24) =216864574a(25) =885859983a(26) =4556794863a(27) =4939169289a(28) =8580755055a(29) =8672110451