T(n,k)=Number of nXk 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.
A203542
T(n,k)=Number of nXk 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =0a(6) =0a(7) =4a(8) =4a(9) =0a(10) =0a(11) =16a(12) =72a(13) =16a(14) =0a(15) =0a(16) =64a(17) =144a(18) =144a(19) =64a(20) =0a(21) =0a(22) =196a(23) =1840a(24) =3364a(25) =1840a(26) =196a(27) =0a(28) =0a(29) =676
External references
- oeis: A203542