T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order.

A222654

T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =2a(6) =11a(7) =60a(8) =60a(9) =11a(10) =34a(11) =724a(12) =1229a(13) =724a(14) =34a(15) =131a(16) =7364a(17) =61757a(18) =61757a(19) =7364a(20) =131a(21) =438a(22) =84816a(23) =1073368a(24) =5024944a(25) =1073368a(26) =84816a(27) =438a(28) =2150a(29) =927152

External references