T(n,n-3), array T as in A054110.

Terms

a(0) =1a(1) =10a(2) =28a(3) =57a(4) =98a(5) =152a(6) =222a(7) =310a(8) =418a(9) =548a(10) =702a(11) =882a(12) =1090a(13) =1328a(14) =1598a(15) =1902a(16) =2242a(17) =2620a(18) =3038a(19) =3498a(20) =4002a(21) =4552a(22) =5150a(23) =5798a(24) =6498a(25) =7252a(26) =8062a(27) =8930a(28) =9858a(29) =10848