Number of n X 2 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors.
A183485
Number of n X 2 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors.
Terms
- a(0) =4a(1) =28a(2) =88a(3) =400a(4) =1936a(5) =8368a(6) =38272a(7) =176320a(8) =800512a(9) =3661312a(10) =16761088a(11) =76588288a(12) =350288896a(13) =1602288640a(14) =7327467520a(15) =33513336832a(16) =153280811008a(17) =701043896320
External references
- oeis: A183485