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 4,1,3,2,0 for x=0,1,2,3,4.
A197199
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 4,1,3,2,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =3a(4) =5a(5) =3a(6) =4a(7) =9a(8) =9a(9) =4a(10) =6a(11) =20a(12) =25a(13) =20a(14) =6a(15) =9a(16) =41a(17) =75a(18) =75a(19) =41a(20) =9a(21) =13a(22) =85a(23) =213a(24) =314a(25) =213a(26) =85a(27) =13a(28) =19a(29) =178
External references
- oeis: A197199