Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,0,4,2 for x=0,1,2,3,4.
A196325
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,0,4,2 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =23a(2) =68a(3) =295a(4) =1029a(5) =3932a(6) =15029a(7) =56415a(8) =213788a(9) =807845a(10) =3054887a(11) =11551608a(12) =43672327a(13) =165135129a(14) =624374584a(15) =2360781157a(16) =8926215203a(17) =33750290592a(18) =127611145241a(19) =482502180893
External references
- oeis: A196325