Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,2,4,1 for x=0,1,2,3,4.
A196451
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,2,4,1 for x=0,1,2,3,4.
Terms
- a(0) =4a(1) =14a(2) =40a(3) =131a(4) =383a(5) =1232a(6) =3966a(7) =12314a(8) =38745a(9) =122989a(10) =386667a(11) =1216157a(12) =3839910a(13) =12101854a(14) =38109643a(15) =120144068a(16) =378709117a(17) =1193259020a(18) =3760674157a(19) =11852918903a(20) =37353389828a(21) =117718989595a(22) =371005905259
External references
- oeis: A196451