58765

Appears in sequences

• Numbers of the form m = p1 * p2 * p3 * p4 where for each d|m we have (d+m/d)/2 prime and p1 < p2 < p3 < p4 each prime.at n=10A128285
• Convolution of A000108 (Catalan numbers) and A001764 (ternary trees): a(n) = Sum_{k=0..n} C(2k,k) * C(3(n-k),n-k) / [(k+1)(2(n-k)+1)].at n=8A130579
• Products of emirpimes pairs, sorted.at n=8A158126
• Number of cyclotomic cosets of 7 mod 10^n.at n=28A220019
• Value of y for solution of 5^n = x^2 + y^2 with closest x and y (n >= 0, 0 <= x < y).at n=14A236572