Row sums of triangle A105620.

Terms

a(0) =1a(1) =0a(2) =-3a(3) =-16a(4) =-104a(5) =-908a(6) =-9980a(7) =-130756a(8) =-1978044a(9) =-33864628a(10) =-646882700a(11) =-13637768276a(12) =-314550050684