Zeroth row of infinite Latin square heading to -oo.

Terms

a(0) =0a(1) =-2a(2) =-3a(3) =-7a(4) =-6a(5) =-12a(6) =-9a(7) =-19a(8) =-14a(9) =-23a(10) =-15a(11) =-27a(12) =-18a(13) =-33a(14) =-21a(15) =-39a(16) =-25a(17) =-42a(18) =-26a(19) =-46a(20) =-29a(21) =-50a(22) =-32a(23) =-55a(24) =-36a(25) =-60a(26) =-38a(27) =-64a(28) =-41a(29) =-69