Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.
A196861
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =9a(2) =56a(3) =281a(4) =1900a(5) =11280a(6) =62298a(7) =350779a(8) =1995082a(9) =11350977a(10) =64705845a(11) =368982902a(12) =2102619515a(13) =11979490295a(14) =68255053688a(15) =388895058185
External references
- oeis: A196861