Number of 0..7 arrays of length n with each element differing from at least one neighbor by 2 or more.
A221523
Number of 0..7 arrays of length n with each element differing from at least one neighbor by 2 or more.
Terms
- a(0) =0a(1) =42a(2) =222a(3) =1764a(4) =12458a(5) =90684a(6) =654864a(7) =4738970a(8) =34274630a(9) =247928860a(10) =1793345580a(11) =12971955294a(12) =93830864024a(13) =678713206224
External references
- oeis: A221523