Alternating row sums of A350464.

Terms

a(0) =1a(1) =-1a(2) =2a(3) =-2a(4) =-20a(5) =54a(6) =894a(7) =38746a(8) =-559964a(9) =-30609658a(10) =-31739522a(11) =35082324322