Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.
A196332
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,1,2 for x=0,1,2,3,4.
Terms
- a(0) =4a(1) =8a(2) =7a(3) =50a(4) =111a(5) =259a(6) =744a(7) =1840a(8) =4761a(9) =12491a(10) =33073a(11) =86147a(12) =225519a(13) =592444a(14) =1548876a(15) =4064416a(16) =10672675a(17) =27999791a(18) =73482986a(19) =192857345a(20) =506140823a(21) =1328448433a(22) =3487163834a(23) =9153779129a(24) =24028409740a(25) =63075279907a(26) =165574433166a(27) =434640853456
External references
- oeis: A196332