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 3,2,0,4,1 for x=0,1,2,3,4.
A196802
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 3,2,0,4,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =2a(6) =3a(7) =20a(8) =20a(9) =3a(10) =5a(11) =65a(12) =120a(13) =65a(14) =5a(15) =8a(16) =203a(17) =698a(18) =698a(19) =203a(20) =8a(21) =13a(22) =648a(23) =4078a(24) =7407a(25) =4078a(26) =648a(27) =13a(28) =21a(29) =2057
External references
- oeis: A196802