Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4.
A196141
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4.
Terms
- a(0) =4a(1) =8a(2) =7a(3) =26a(4) =49a(5) =85a(6) =178a(7) =348a(8) =683a(9) =1349a(10) =2688a(11) =5319a(12) =10498a(13) =20818a(14) =41206a(15) =81574a(16) =161646a(17) =320215a(18) =634294a(19) =1256481a(20) =2489029a(21) =4930656a(22) =9767642a(23) =19350237a(24) =38333645a(25) =75940498a(26) =150441579a(27) =298031468a(28) =590414638a(29) =1169642000
External references
- oeis: A196141