T(n,k)=Number of nXk 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.

A203443

T(n,k)=Number of nXk 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =8a(5) =1a(6) =1a(7) =64a(8) =64a(9) =1a(10) =1a(11) =372a(12) =4124a(13) =372a(14) =1a(15) =1a(16) =2528a(17) =142108a(18) =142108a(19) =2528a(20) =1a(21) =1a(22) =21988a(23) =4401184a(24) =24278164a(25) =4401184a(26) =21988a(27) =1a(28) =1a(29) =186348

External references