Triangle read by rows: terms T(n,k) of a binomial decomposition of n*(n-1) as Sum(k=0..n)T(n,k).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =2a(6) =0a(7) =0a(8) =12a(9) =-6a(10) =0a(11) =0a(12) =48a(13) =-72a(14) =36a(15) =0a(16) =0a(17) =160a(18) =-540a(19) =720a(20) =-320a(21) =0a(22) =0a(23) =480a(24) =-3240a(25) =8640a(26) =-9600a(27) =3750a(28) =0a(29) =0