Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.
A197524
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =3a(2) =32a(3) =69a(4) =308a(5) =1444a(6) =5048a(7) =20265a(8) =83277a(9) =322864a(10) =1280598a(11) =5112008a(12) =20189827a(13) =80032884a(14) =317712722a(15) =1258773307a(16) =4990157041a(17) =19788837323a(18) =78445935632a(19) =310998937948
External references
- oeis: A197524