56511

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= (n-2)/3.at n=18A048017
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= (n-3)/3.at n=18A048028
• Molien series for group G_{1,3} of order 2304.at n=20A051461
• Molien series for group G_{1,3}^{8} of order 4608.at n=10A051463
• Sum of terms in n-th row of A081491.at n=20A081492
• a(n) = phi(C(n)) / gcd(C(n)-1, phi(C(n))), where C(n) is the n-th Cullen number.at n=22A195418
• Smallest possible largest number in a 3 by n average array where repetitions are not allowed without diagonals.at n=10A195753
• Numbers m such that both m^2-1 and m^2 are refactorable numbers (A033950) and that m^2 has more divisors than m^2-1.at n=27A342970
• Numbers k such that omega(k) = 4 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where omega(k) = A001221(k).at n=35A383728