T(n,k)=Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors).
A208001
T(n,k)=Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =15a(5) =5a(6) =15a(7) =114a(8) =114a(9) =15a(10) =52a(11) =1657a(12) =4141a(13) =1657a(14) =52a(15) =203a(16) =36401a(17) =426422a(18) =426422a(19) =36401a(20) =203a(21) =877a(22) =1094076a(23) =86545486a(24) =450288795a(25) =86545486a(26) =1094076a(27) =877a(28) =4140a(29) =42436913
External references
- oeis: A208001