Number of nX2 0..4 arrays with each element equal to the number its horizontal and vertical neighbors less than itself.
A196424
Number of nX2 0..4 arrays with each element equal to the number its horizontal and vertical neighbors less than itself.
Terms
- a(0) =3a(1) =23a(2) =123a(3) =809a(4) =5274a(5) =33923a(6) =219807a(7) =1424725a(8) =9226721a(9) =59782080a(10) =387322045a(11) =2509377827a(12) =16258011561a(13) =105333834791a(14) =682445646554
External references
- oeis: A196424