Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4.
A197247
Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =40a(2) =110a(3) =780a(4) =5062a(5) =31276a(6) =213912a(7) =1244680a(8) =8149652a(9) =54813300a(10) =363207297a(11) =2334210952a(12) =15099425049a(13) =99496688244a(14) =657733281792
External references
- oeis: A197247