50255

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 2, 5 and 6.at n=28A136911
• Numbers k such that k and k^2 use only the digits 0, 2, 5, 6 and 8.at n=40A136913
• Numbers k such that k and k^2 use only the digits 0, 2, 5, 6 and 9.at n=38A136914
• Consider the first run of composites that contains at least two numbers whose largest prime factor is prime(n), n >= 2. a(n) is the second of these numbers.at n=7A137800
• Numbers n such that A083722(n) > 1 and A083722(n) occurs earlier in A083722.at n=28A293894
• Integers i such that the equation A088387(i) = p has N > 1 solutions in the interval prevprime(i)..nextprime(i).at n=31A308617
• Array read by antidiagonals: Place k points in general position on each side of a regular n-gon and join every pair of the k*n boundary points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of edges in the resulting planar graph.at n=38A392282