T(n,k)=Number of nXk 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.

A202988

T(n,k)=Number of nXk 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =9a(5) =1a(6) =1a(7) =63a(8) =63a(9) =1a(10) =1a(11) =323a(12) =1233a(13) =323a(14) =1a(15) =1a(16) =1629a(17) =16854a(18) =16854a(19) =1629a(20) =1a(21) =1a(22) =8534a(23) =239196a(24) =595202a(25) =239196a(26) =8534a(27) =1a(28) =1a(29) =44885

External references