Number of n X 4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.
A196859
Number of n X 4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =4a(2) =12a(3) =35a(4) =102a(5) =281a(6) =787a(7) =2237a(8) =6346a(9) =17976a(10) =50903a(11) =144132a(12) =408157a(13) =1155913a(14) =3273609a(15) =9270960a(16) =26255482a(17) =74355847a(18) =210576950a(19) =596357727a(20) =1688896077a(21) =4782984549a(22) =13545499068a(23) =38361099308a(24) =108639331309a(25) =307668565890
External references
- oeis: A196859