Number of nX3 0..1 arrays with exactly n+3-2 having value 1 and no three 1s forming an isosceles right triangle.

A272953

Number of nX3 0..1 arrays with exactly n+3-2 having value 1 and no three 1s forming an isosceles right triangle.

Terms

    a(0) =3a(1) =10a(2) =24a(3) =24a(4) =107a(5) =236a(6) =499a(7) =1228a(8) =2753a(9) =6292a(10) =14751a(11) =34824a(12) =78495a(13) =179600a(14) =418135a(15) =958972a(16) =2193399a(17) =5026564a(18) =11504714a(19) =26279352a(20) =60040180a(21) =137016314a(22) =312081316a(23) =710648768a(24) =1617618343a(25) =3678123154a(26) =8356175747a(27) =18974024164a(28) =43057072946

External references