Numbers k such that sigma(k) + phi(k) is a brilliant number (A078972).

Terms

a(0) =2a(1) =3a(2) =4a(3) =5a(4) =6a(5) =7a(6) =128a(7) =144a(8) =400a(9) =576a(10) =1296a(11) =8100a(12) =11664a(13) =13225a(14) =15129a(15) =34969a(16) =40000a(17) =44944a(18) =55112a(19) =60025a(20) =63368a(21) =67712a(22) =69938a(23) =91809a(24) =103058a(25) =135424a(26) =157922a(27) =203401a(28) =861184a(29) =1034289