Number of 3 X 3 0..n arrays with every element equal to a diagonal or antidiagonal reflection.

A209594

Number of 3 X 3 0..n arrays with every element equal to a diagonal or antidiagonal reflection.

Terms

    a(0) =192a(1) =3645a(2) =28672a(3) =140625a(4) =513216a(5) =1529437a(6) =3932160a(7) =9034497a(8) =19000000a(9) =37202781a(10) =68677632a(11) =120670225a(12) =203297472a(13) =330328125a(14) =520093696a(15) =796539777a(16) =1190427840a(17) =1740697597a(18) =2496000000a(19) =3516410961a(20) =4875335872a(21) =6661615005a(22) =8981839872

External references