An example of a d-perfect sequence: a(n) = A007317(n) mod 3.

Terms

a(0) =1a(1) =2a(2) =2a(3) =0a(4) =0a(5) =2a(6) =2a(7) =1a(8) =1a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =0a(16) =0a(17) =2a(18) =2a(19) =1a(20) =1a(21) =0a(22) =0a(23) =1a(24) =1a(25) =2a(26) =2a(27) =0a(28) =0a(29) =0