123786

Appears in sequences

• Number of nonisomorphic edge colorings of the Petersen graph with at most n colors.at n=2A270842
• Number of subsets of {1..n} containing n whose mean is not an element.at n=18A327477
• a(1) = 1; a(2) = 1; for n >= 3, a(n) = a(n-1) / gcd(a(n-1), n-1) + a(n-2) / gcd(a(n-2), n-2).at n=48A330806
• Number of ways to select 3 or more collinear points from an n X n grid.at n=11A355553