T(n,k)=Number of horizontal, vertical or knight-move neighbor colorings of an nXk array with new integer colors introduced in row major order.

A216663

T(n,k)=Number of horizontal, vertical or knight-move neighbor colorings of an nXk array with new integer colors introduced in row major order.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =2a(6) =5a(7) =25a(8) =25a(9) =5a(10) =15a(11) =279a(12) =780a(13) =279a(14) =15a(15) =52a(16) =4800a(17) =59799a(18) =59799a(19) =4800a(20) =52a(21) =203a(22) =116635a(23) =8990804a(24) =45120796a(25) =8990804a(26) =116635a(27) =203a(28) =877a(29) =3760019

External references