T(n,n-6), array T as in A038730.

Terms

a(0) =1a(1) =14a(2) =107a(3) =593a(4) =2673a(5) =10429a(6) =36622a(7) =118885a(8) =363791a(9) =1064866a(10) =3015563a(11) =8334539a(12) =22634700a(13) =60713627a(14) =161467437a(15) =426957444a(16) =1124716630a(17) =2955628731a(18) =7755292673a(19) =20330279298a(20) =53265590236a(21) =139510843575a(22) =365331452729