a(n) = n mod 7.

Terms

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