456975

Appears in sequences

• Positive numbers which are one less than a perfect square that is also another power.at n=33A062965
• Numbers k such that the number of primes <= k is equal to the sum of primes from the smallest prime factor of k to the largest prime factor of k.at n=13A074210
• a(n) = n^4 - 1.at n=25A123865
• n^4 - 1 divided by its largest fourth power divisor.at n=24A128251
• a(n) = 2401*n^2 - 980*n + 99.at n=13A157375
• Let d(n,k) be the n-th divisor of a number k. a(n) is the smallest k such that d(n+1,k+1) = d(n,k) + 1.at n=23A285883
• a(n) is the smallest number m with n divisors such that m + 1 has n + 1 divisors; or 0 if no such number exists.at n=23A343144
• Odd numbers that are one less than the square of a perfect power.at n=17A389956