7144929

Appears in sequences

• Squares of odd heptagonal numbers.at n=16A014773
• a(n) = Product_{k=1..n-1} gcd(k,n).at n=32A051190
• Number of spanning trees on the bipartite graph K_{3,n}.at n=11A069996
• Numbers of the form (9^i)*(11^j), with i, j >= 0.at n=30A108687
• Sum of 5 consecutive powers of 3, starting with a power of 9.at n=5A120353
• Numbers which can be expressed as the product of numbers made of only nines.at n=33A161147
• Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial Product_{i=1..n} (x + q^i) in row n and q = 3.at n=16A173007
• Numbers with 33 divisors.at n=25A175743
• Sequence related to discriminant of cyclotomic polynomials A004124.at n=32A193679
• (n-1)-st elementary symmetric function of {3,9,...,3^n}.at n=4A203148
• a(n) = the smallest number m such that gcd(m, tau(m)) = n where tau(k) = the number of the divisors of k (A000005).at n=32A324553
• a(n) = the smallest number m such that gcd(tau(m), pod(m)) = n where tau(k) = the number of the divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).at n=32A324555
• Smallest number having exactly n divisors of the form 8*k + 1.at n=16A343104
• a(n) is the smallest nonnegative integer k where there are exactly n nonnegative integer solutions to x^2 + 2*y^2 = k.at n=17A374285
• a(n) is the smallest positive integer k such that A002325(k) = n.at n=32A374294