36782

Appears in sequences

• Numbers k such that 50*R_k + 7 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=13A056686
• a(n) is the smallest k such that number of non-unitary prime divisors of central binomial coefficient, A000984(k) = C(2*k,k) equals n.at n=30A081393
• Number of length 4 1..(n+2) arrays with no leading or trailing partial sum equal to a prime.at n=21A254207
• Number of compositions of n if only the order of the odd numbers matter.at n=22A275548