Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.
A196333
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.
Terms
- a(0) =5a(1) =17a(2) =50a(3) =335a(4) =894a(5) =3246a(6) =14973a(7) =64423a(8) =270901a(9) =1067992a(10) =4278465a(11) =17554846a(12) =73250696a(13) =303360883a(14) =1240601669a(15) =5071382869a(16) =20820082942a(17) =85773230271a(18) =353226448334
External references
- oeis: A196333