185130

Appears in sequences

• a(n) = Sum_{k=1..n, gcd(n,k) = 1} k^3.at n=32A053819
• a(n) = (n+1)*(n+2)^2*(n+3)^2*(n+4)^2*(n+5)*(2n+3)/8640.at n=7A107943
• a(n) is the minimal k such that nextprime(2k+1) - 2k = prime(n) where nextprime(n) is least prime > n.at n=29A229512
• Nonsquare integers >= 2 for which the square of its largest prime factor equals the sum of the squares of its other prime factors, with multiplicity.at n=9A391874