T(n,k) = Number of n X k 0..7 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

A202916

T(n,k) = Number of n X k 0..7 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Terms

    a(0) =1a(1) =8a(2) =8a(3) =64a(4) =680a(5) =64a(6) =372a(7) =31984a(8) =31984a(9) =372a(10) =1856a(11) =1194376a(12) =9509536a(13) =1194376a(14) =1856a(15) =9052a(16) =44344428a(17) =2397172032a(18) =2397172032a(19) =44344428a(20) =9052a(21) =45648a(22) =1707628408a(23) =622483753816a(25) =622483753816a(26) =1707628408a(27) =45648a(28) =235538

External references