T(n,n-1), array T as in A054115.

Terms

a(0) =1a(1) =2a(2) =8a(3) =32a(4) =152a(5) =872a(6) =5912a(7) =46232a(8) =409112a(9) =4037912a(10) =43954712a(11) =522956312a(12) =6749977112a(13) =93928268312