13693680

Appears in sequences

• Numbers that can be expressed as the difference of the squares of primes in exactly eighteen distinct ways.at n=23A092014
• Coefficients of certain power series associated with Atkin polynomials (see Kaneko-Zagier reference for precise definition).at n=3A145495
• Least k such that n+1 is the n-th divisor of k.at n=16A256605
• Ramanujan's largely composite numbers n (A067128) which are not divisible by all the primes < p, where p is the greatest prime divisor of n.at n=35A273379
• Least integer with n pentagonal divisors.at n=19A356132
• Positions of records in A279497, i.e., integers whose number of pentagonal divisors sets a new record.at n=18A356179
• a(n) is the smallest number with exactly n divisors that are tetrahedral numbers.at n=22A358542
• a(n) is the smallest number with exactly n divisors that are square pyramidal numbers.at n=14A358543