First column of triangle A103910.

Terms

a(0) =1a(1) =-1a(2) =0a(3) =1a(4) =-1a(5) =-6a(6) =35a(7) =181a(8) =-6056a(9) =-3741a(10) =5880885a(11) =-149991434a(12) =-32148902071