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 2,1,1,0,0 for x=0,1,2,3,4.
A197450
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 2,1,1,0,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =3a(4) =5a(5) =3a(6) =4a(7) =12a(8) =12a(9) =4a(10) =7a(11) =36a(12) =81a(13) =36a(14) =7a(15) =11a(16) =107a(17) =474a(18) =474a(19) =107a(20) =11a(21) =16a(22) =321a(23) =2678a(24) =4837a(25) =2678a(26) =321a(27) =16a(28) =26a(29) =957
External references
- oeis: A197450