Row sums of number triangle A106270.

Terms

a(0) =1a(1) =0a(2) =-2a(3) =-7a(4) =-21a(5) =-63a(6) =-195a(7) =-624a(8) =-2054a(9) =-6916a(10) =-23712a(11) =-82498a(12) =-290510a(13) =-1033410a(14) =-3707850a(15) =-13402695a(16) =-48760365a(17) =-178405155a(18) =-656043855a(19) =-2423307045a(20) =-8987427465a(21) =-33453694485a(22) =-124936258125a(23) =-467995871775