42450

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n+2)/3.at n=27A048075
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n+3)/3.at n=27A048086
• Numbers n such that 41*2^n-1 is prime.at n=15A050546
• Number of K_4-free Berge perfect graphs on n nodes.at n=8A123429
• a(n) is the smallest integer >= a(n-1) such that prime(n)*2^a(n)-1 is a prime number.at n=12A258868
• Number of odd parts in the partitions of n into 8 parts.at n=48A309628