T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.
A208175
T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =13a(5) =5a(6) =15a(7) =159a(8) =159a(9) =15a(10) =51a(11) =2277a(12) =8469a(13) =2277a(14) =51a(15) =187a(16) =33831a(17) =473928a(18) =473928a(19) =33831a(20) =187a(21) =715a(22) =506493a(23) =26625693a(24) =99752346a(25) =26625693a(26) =506493a(27) =715a(28) =2795a(29) =7594479
External references
- oeis: A208175