T(n,n-3), array T as in A054090.

Terms

a(0) =1a(1) =10a(2) =22a(3) =108a(4) =544a(5) =3370a(6) =24030a(7) =195172a(8) =1777648a(9) =17950554a(10) =199059670a(11) =2405063020a(12) =31448531952a(13) =442501797658