a(n) = n-35.

Terms

a(0) =-35a(1) =-34a(2) =-33a(3) =-32a(4) =-31a(5) =-30a(6) =-29a(7) =-28a(8) =-27a(9) =-26a(10) =-25a(11) =-24a(12) =-23a(13) =-22a(14) =-21a(15) =-20a(16) =-19a(17) =-18a(18) =-17a(19) =-16a(20) =-15a(21) =-14a(22) =-13a(23) =-12a(24) =-11a(25) =-10a(26) =-9a(27) =-8a(28) =-7a(29) =-6