Number of 4X4 0..n zero-diagonal arrays with corresponding row and column sums equal.

A229418

Number of 4X4 0..n zero-diagonal arrays with corresponding row and column sums equal.

Terms

    a(0) =152a(1) =4743a(2) =59008a(3) =426425a(4) =2164680a(5) =8583967a(6) =28371968a(7) =81545697a(8) =209841400a(9) =493679879a(10) =1078445952a(11) =2213497273a(12) =4308069416a(13) =8009070975a(14) =14306664448a(15) =24674505857a(16) =41252568408a(17) =67081603015a(18) =106399491200a(19) =165011023737

External references