71875

Appears in sequences

• Numbers k that divide the (right) concatenation of all numbers <= k written in base 5 (most significant digit on left).at n=29A029450
• a(n) = 2*n^3 + 1.at n=33A033562
• Hypotenuses for which there exist exactly 5 distinct Pythagorean triangles.at n=16A084649
• a(n) is the least odd number m minimizing A007947(m*(2^n-m)).at n=17A143700
• a(n) = 66*n^2 + 1.at n=33A158689
• Number of involutions avoiding the pattern 21 (with a dot over the 1).at n=12A201689
• Numbers for which the number of prime divisors counted with multiplicity and the sum of the distinct prime divisors are both perfect.at n=28A233563
• Consider a number x = concat(a,b). Sequence lists numbers x such that digits of b^a end in x.at n=35A266818