a(n) = n-37.

Terms

a(0) =-37a(1) =-36a(2) =-35a(3) =-34a(4) =-33a(5) =-32a(6) =-31a(7) =-30a(8) =-29a(9) =-28a(10) =-27a(11) =-26a(12) =-25a(13) =-24a(14) =-23a(15) =-22a(16) =-21a(17) =-20a(18) =-19a(19) =-18a(20) =-17a(21) =-16a(22) =-15a(23) =-14a(24) =-13a(25) =-12a(26) =-11a(27) =-10a(28) =-9a(29) =-8