phi(n) plus the n-th prime gives a cube.

Terms

a(0) =61a(1) =63a(2) =64a(3) =113a(4) =202a(5) =1331a(6) =1337a(7) =10249a(8) =10676a(9) =31003a(10) =103961a(11) =188865a(12) =195591a(13) =276541a(14) =310465a(15) =315916a(16) =396566a(17) =429441a(18) =433508a(19) =651267a(20) =862996a(21) =1029073a(22) =1099999a(23) =1792997a(24) =2346662a(25) =2525871a(26) =2717114a(27) =3728397a(28) =4270684a(29) =4547926