a(n) = n-22.

Terms

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