Number of nX6 0..4 arrays with each element equal to the number its horizontal and vertical neighbors unequal to itself.

A195960

Number of nX6 0..4 arrays with each element equal to the number its horizontal and vertical neighbors unequal to itself.

Terms

    a(0) =2a(1) =14a(2) =44a(3) =70a(4) =93a(5) =214a(6) =410a(7) =998a(8) =2123a(9) =4591a(10) =11034a(11) =26330a(12) =60901a(13) =143300a(14) =345175a(15) =823118a(16) =1988085a(17) =4777597a(18) =11547151a(19) =28117721a(20) =68374283a(21) =166223266a(22) =405654362a(23) =991476600a(24) =2422998474a(25) =5926884201a(26) =14512749914a(27) =35554454454a(28) =87151183742

External references