Number of 1 X n 0..2 arrays with every repeated value in every row not one larger and in every column one larger mod 3 than the previous repeated value, and upper left element zero.
A268093
Number of 1 X n 0..2 arrays with every repeated value in every row not one larger and in every column one larger mod 3 than the previous repeated value, and upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =26a(4) =74a(5) =208a(6) =580a(7) =1608a(8) =4440a(9) =12224a(10) =33584a(11) =92128a(12) =252448a(13) =691200a(14) =1891392a(15) =5173376a(16) =14145920a(17) =38671360a(18) =105700096a(19) =288873984a(20) =789410304a(21) =2157092864a(22) =5894054912a(23) =16104392704a(24) =44001089536a(25) =120219353088a(26) =328457662464
External references
- oeis: A268093