109293

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and 2*w*x>3*y*z.at n=23A211922
• Number of length 3+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.at n=27A248540
• Number of set partitions of {1,...,n} with relatively prime block sizes.at n=10A318120
• a(n) = number of nonempty subsets S of {1,2,...,n} such that (number of primes in S) <= (number of nonprimes in S).at n=17A369781