1203840

Appears in sequences

• Expansion of sin(x)*cosh(sin(x)).at n=6A009538
• Expansion of sin(x)*exp(sin(x)).at n=13A009541
• Smallest k such that the partial sums of the divisors of k (in decreasing order) generate n primes.at n=19A187825
• a(n) = phi(n^5 - 1)/5 where phi is A000010.at n=25A319214