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 horizontal or antidiagonal neighbor (colorings ignoring permutations of colors).

A208301

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 horizontal or antidiagonal neighbor (colorings ignoring permutations of colors).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =2a(4) =5a(5) =5a(6) =5a(7) =42a(8) =52a(9) =15a(10) =15a(11) =602a(12) =2906a(13) =877a(14) =52a(15) =52a(16) =12840a(17) =373780a(18) =433252a(19) =21147a(20) =203a(21) =203a(22) =373780a(23) =87852626a(24) =656404264a(25) =113503692a(26) =678570a(27) =877a(28) =877a(29) =14050312

External references