Number of nX5 0..1 arrays with exactly n+5-1 having value 1 and no three 1s forming an isosceles right triangle.

A272962

Number of nX5 0..1 arrays with exactly n+5-1 having value 1 and no three 1s forming an isosceles right triangle.

Terms

    a(0) =1a(1) =1a(2) =9a(3) =8a(4) =12a(5) =58a(6) =367a(7) =1952a(8) =10854a(9) =28952a(10) =111036a(11) =509073a(12) =1987399a(13) =7893688a(14) =31529461a(15) =127809627a(16) =503908003a(17) =2046633068a(18) =8290122978a(19) =32995116709a(20) =132715051945a(21) =535961114544

External references