Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,4,2 for x=0,1,2,3,4.
A196294
Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,4,2 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =9a(2) =20a(3) =61a(4) =187a(5) =536a(6) =1597a(7) =4849a(8) =14582a(9) =44097a(10) =134349a(11) =409428a(12) =1249517a(13) =3822519a(14) =11705002a(15) =35866253a(16) =109991817a(17) =337493970a(18) =1035913925a(19) =3180693901a(20) =9768462112a(21) =30005758115a(22) =92181317503a(23) =283222651372a(24) =870256732085
External references
- oeis: A196294