T(n,k) = number of n X k 0..4 arrays with no entry increasing mod 5 by 4 rightwards or downwards, starting with upper left zero.

A222144

T(n,k) = number of n X k 0..4 arrays with no entry increasing mod 5 by 4 rightwards or downwards, starting with upper left zero.

Terms

    a(0) =1a(1) =4a(2) =4a(3) =16a(4) =52a(5) =16a(6) =64a(7) =676a(8) =676a(9) =64a(10) =256a(11) =8788a(12) =28564a(13) =8788a(14) =256a(15) =1024a(16) =114244a(17) =1206964a(18) =1206964a(19) =114244a(20) =1024a(21) =4096a(22) =1485172a(23) =50999956a(24) =165770032a(25) =50999956a(26) =1485172a(27) =4096a(28) =16384a(29) =19307236

External references