Alternating row sums of A066448.

Terms

a(0) =1a(1) =-1a(2) =-2a(3) =-2a(4) =-1a(5) =0a(6) =2a(7) =4a(8) =6a(9) =7a(10) =8a(11) =8a(12) =6a(13) =4a(14) =0a(15) =-6a(16) =-11a(17) =-18a(18) =-26a(19) =-32a(20) =-38a(21) =-44a(22) =-46a(23) =-46a(24) =-44a(25) =-37a(26) =-26a(27) =-12a(28) =8a(29) =32