Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.
A196899
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =3a(2) =20a(3) =71a(4) =286a(5) =1176a(6) =4768a(7) =19265a(8) =78414a(9) =318016a(10) =1290577a(11) =5238372a(12) =21260925a(13) =86285262a(14) =350204527a(15) =1421330461a(16) =5768590644a(17) =23412347684a(18) =95021149248a(19) =385651641498
External references
- oeis: A196899