Triangle T(n, k) = ( k*(n-k+1) )^3 - 2^(n-1), read by rows.

Terms

a(0) =0a(1) =6a(2) =6a(3) =23a(4) =60a(5) =23a(6) =56a(7) =208a(8) =208a(9) =56a(10) =109a(11) =496a(12) =713a(13) =496a(14) =109a(15) =184a(16) =968a(17) =1696a(18) =1696a(19) =968a(20) =184a(21) =279a(22) =1664a(23) =3311a(24) =4032a(25) =3311a(26) =1664a(27) =279a(28) =384a(29) =2616