a(n) = n mod 6.

Terms

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