Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,2,2 for x=0,1,2,3,4.
A197453
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,2,2 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =23a(2) =84a(3) =583a(4) =2233a(5) =10758a(6) =53337a(7) =252125a(8) =1209824a(9) =5768661a(10) =27595593a(11) =132068806a(12) =631286751a(13) =3018734589a(14) =14435100274a(15) =69026970467a(16) =330080196953
External references
- oeis: A197453