Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.
A196474
Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.
Terms
- a(0) =8a(1) =18a(2) =17a(3) =70a(4) =151a(5) =557a(6) =2351a(7) =6926a(8) =16083a(9) =43523a(10) =126887a(11) =366749a(12) =1196290a(13) =3904083a(14) =12242778a(15) =35866180a(16) =101052064a(17) =296050389a(18) =899499517a(19) =2807496039a(20) =8933240984a(21) =27433666911a(22) =81672960692a(23) =242780272113a(24) =727008678986
External references
- oeis: A196474