320040

Appears in sequences

• Smallest number having exactly n divisors that are not greater than the number's greatest prime factor.at n=34A087134
• Triangle T(n,k) read by rows: the number of traceless symmetric binary n X n matrices with 2k one's and no all-1 2 X 2 submatrix.at n=43A352472
• Number of maximal subsets of {1..n} containing n such that it is possible to choose a different binary index of each element.at n=37A370641
• Numbers k such that A380845(k)/k > A380845(m)/m for all m < k.at n=24A381070
• Smallest number whose largest odd noncomposite divisor is its n-th divisor.at n=34A384232