a(n) = n-6.

Terms

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