T(n,k)=Half the number of nXk binary arrays with no 1 having an adjacent 1 both above and to its left.

A184761

T(n,k)=Half the number of nXk binary arrays with no 1 having an adjacent 1 both above and to its left.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =4a(4) =7a(5) =4a(6) =8a(7) =25a(8) =25a(9) =8a(10) =16a(11) =89a(12) =163a(13) =89a(14) =16a(15) =32a(16) =317a(17) =1056a(18) =1056a(19) =317a(20) =32a(21) =64a(22) =1129a(23) =6847a(24) =12397a(25) =6847a(26) =1129a(27) =64a(28) =128a(29) =4021

External references