Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,3,4,0 for x=0,1,2,3,4.
A196952
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,3,4,0 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =9a(2) =26a(3) =87a(4) =282a(5) =919a(6) =2987a(7) =9722a(8) =31643a(9) =102962a(10) =335048a(11) =1090310a(12) =3548040a(13) =11545789a(14) =37571671a(15) =122263766a(16) =397863990a(17) =1294706917a(18) =4213164246a(19) =13710247872a(20) =44615134395a(21) =145184117131a(22) =472450174347
External references
- oeis: A196952