T(n,k)=Half the number of (n+2)X(k+2) binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6.

A187317

T(n,k)=Half the number of (n+2)X(k+2) binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6.

Terms

    a(0) =210a(1) =1472a(2) =1472a(3) =10262a(4) =18792a(5) =10262a(6) =71836a(7) =237650a(8) =237650a(9) =71836a(10) =502545a(11) =3029032a(12) =5422402a(13) =3029032a(14) =502545a(15) =3516295a(16) =38586679a(17) =125103786a(18) =125103786a(19) =38586679a(20) =3516295a(21) =24602854a(22) =491649803a(23) =2885253967a(24) =5243407780a(25) =2885253967

External references