Number of 0..6 arrays of length n with each element differing from at least one neighbor by 2 or more.
A221522
Number of 0..6 arrays of length n with each element differing from at least one neighbor by 2 or more.
Terms
- a(0) =0a(1) =30a(2) =130a(3) =900a(4) =5368a(5) =33380a(6) =205080a(7) =1264378a(8) =7787228a(9) =47975704a(10) =295543282a(11) =1820672982a(12) =11216042008a(13) =69095255496a(14) =425653839018
External references
- oeis: A221522