T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,4,1,0,1 for x=0,1,2,3,4.
A197373
T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,4,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =7a(12) =32a(13) =7a(14) =1a(15) =1a(16) =17a(17) =45a(18) =45a(19) =17a(20) =1a(21) =1a(22) =41a(23) =189a(24) =161a(25) =189a(26) =41a(27) =1a(28) =1a(29) =99
External references
- oeis: A197373