Triangle T(n, k) = k^4 - n^4 + 2*k*n*(1 - k^2*n^2), read by rows.

Terms

a(0) =0a(1) =-1a(2) =0a(3) =-16a(4) =-27a(5) =-120a(6) =-81a(7) =-128a(8) =-485a(9) =-1440a(10) =-256a(11) =-375a(12) =-1248a(13) =-3607a(14) =-8160a(15) =-625a(16) =-864a(17) =-2589a(18) =-7264a(19) =-16329a(20) =-31200a(21) =-1296a(22) =-1715a(23) =-4712a(24) =-12843a(25) =-28640a(26) =-54611a(27) =-93240a(28) =-2401a(29) =-3072