Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,1,1 for x=0,1,2,3,4.
A198150
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,1,1 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =12a(2) =54a(3) =240a(4) =1170a(5) =5330a(6) =24689a(7) =116890a(8) =549479a(9) =2578328a(10) =12131698a(11) =57065922a(12) =268256602a(13) =1261383897a(14) =5931754425a(15) =27891320698a(16) =131147135601a(17) =616682910805
External references
- oeis: A198150