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 4,0,1,2,3 for x=0,1,2,3,4.
A196685
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 4,0,1,2,3 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =4a(4) =9a(5) =4a(6) =5a(7) =20a(8) =20a(9) =5a(10) =9a(11) =61a(12) =58a(13) =61a(14) =9a(15) =16a(16) =189a(17) =292a(18) =292a(19) =189a(20) =16a(21) =25a(22) =544a(23) =1235a(24) =2245a(25) =1235a(26) =544a(27) =25a(28) =39a(29) =1629
External references
- oeis: A196685