131012

Appears in sequences

• Number of 0..4 arrays of length n with each element differing from at least one neighbor by something other than 1, starting with 0.at n=8A221538
• a(n) = A364557(n) - A000010(n), where A364557 is the Möbius transform of A005941, and A000010 (Euler phi) is the Möbius transform of A000027.at n=60A364558
• a(n) = A005941(n) - n.at n=60A364559