T(n,k)=Number of nXk nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).
A208788
T(n,k)=Number of nXk nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =10a(5) =5a(6) =15a(7) =114a(8) =114a(9) =15a(10) =52a(11) =2066a(12) =9089a(13) =2066a(14) =52a(15) =203a(16) =52922a(17) =1515903a(18) =1515903a(19) =52922a(20) =203a(21) =877a(22) =1788850a(23) =435411946a(24) =3038188519a(25) =435411946a(26) =1788850a(27) =877a(28) =4140a(29) =76282138
External references
- oeis: A208788