138510

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= n/3.at n=27A047195
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n-1)/3.at n=27A048007
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n+1)/3.at n=27A048040
• a(n) = b(n)*Integral_{x=0..1/(4^n)} (1 - sqrt(x)) dx, where b(n) = 3*24^n.at n=6A093801
• Numbers k such that the sum of the digits of (k^k + k!) is divisible by k.at n=24A109663
• Expansion of Product_{n>=1} (1 - 3^(n-1)*x^n) * (1 + 3^(n-1)*x^n)^2.at n=11A370338