Number of 2 X 2 matrices with entries in {0,1,...,n} with determinant = permanent with no entries repeated.

A280058

Number of 2 X 2 matrices with entries in {0,1,...,n} with determinant = permanent with no entries repeated.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =12a(4) =48a(5) =120a(6) =240a(7) =420a(8) =672a(9) =1008a(10) =1440a(11) =1980a(12) =2640a(13) =3432a(14) =4368a(15) =5460a(16) =6720a(17) =8160a(18) =9792a(19) =11628a(20) =13680a(21) =15960a(22) =18480a(23) =21252a(24) =24288a(25) =27600a(26) =31200a(27) =35100a(28) =39312a(29) =43848

External references