Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,4,3,2,0 for x=0,1,2,3,4.
A196927
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,4,3,2,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =8a(3) =41a(4) =231a(5) =1242a(6) =6755a(7) =36867a(8) =201212a(9) =1098095a(10) =5993391a(11) =32711128a(12) =178534697a(13) =974427409a(14) =5318345776a(15) =29027097867a(16) =158427548077a(17) =864684706754
External references
- oeis: A196927