Number of 0..6 arrays of length n with each element differing from at least one neighbor by something other than 1, starting with 0.
A221540
Number of 0..6 arrays of length n with each element differing from at least one neighbor by something other than 1, starting with 0.
Terms
- a(0) =0a(1) =6a(2) =32a(3) =222a(4) =1455a(5) =9665a(6) =64047a(7) =424593a(8) =2814515a(9) =18656979a(10) =123673887a(11) =819813575a(12) =5434406883a(13) =36023773275a(14) =238795558499
External references
- oeis: A221540