8515584

Appears in sequences

• Number of ways to arrange the numbers 1..n in a circle (up to direction) such that every two adjacent numbers are relatively prime.at n=15A086595
• List of dimensions for which there exist several non-isomorphic irreducible representations of G2.at n=12A339248
• a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3*k) * binomial(k,3*(n-3*k)).at n=35A392042