T(n,n-4), array T as in A038738.

Terms

a(0) =1a(1) =11a(2) =68a(3) =313a(4) =1201a(5) =4082a(6) =12761a(7) =37633a(8) =106573a(9) =293526a(10) =793453a(11) =2118657a(12) =5612906a(13) =14797581a(14) =38896117a(15) =102061314a(16) =267532982a(17) =700883736a(18) =1835598926a(19) =4806570842a(20) =12585001630a(21) =32949618088a(22) =86265413414a(23) =225848657954