Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4.
A196976
Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =5a(2) =14a(3) =37a(4) =104a(5) =290a(6) =803a(7) =2233a(8) =6207a(9) =17242a(10) =47913a(11) =133140a(12) =369944a(13) =1027963a(14) =2856397a(15) =7937011a(16) =22054470a(17) =61282473a(18) =170284722a(19) =473167812a(20) =1314784901a(21) =3653374545a(22) =10151581325a(23) =28208058702a(24) =78381342385a(25) =217797151870
External references
- oeis: A196976