T(n,k)=Number of nXk 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.
A207479
T(n,k)=Number of nXk 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.
Terms
- a(0) =4a(1) =16a(2) =16a(3) =58a(4) =256a(5) =58a(6) =214a(7) =3364a(8) =3364a(9) =214a(10) =788a(11) =45796a(12) =133556a(13) =45796a(14) =788a(15) =2902a(16) =620944a(17) =5632964a(18) =5632964a(19) =620944a(20) =2902a(21) =10686a(22) =8421604a(23) =236422326a(24) =768149650a(25) =236422326a(26) =8421604a(27) =10686a(28) =39350a(29) =114190596
External references
- oeis: A207479