Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,4,1,0 for x=0,1,2,3,4.
A196985
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,4,1,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =5a(2) =25a(3) =113a(4) =547a(5) =2499a(6) =11647a(7) =54845a(8) =256395a(9) =1198317a(10) =5607683a(11) =26243839a(12) =122783657a(13) =574447047a(14) =2687794239a(15) =12575875245a(16) =58839924859a(17) =275301009225
External references
- oeis: A196985