399620

Appears in sequences

• Square roots of sums of squares of divisors in A046655.at n=30A046656
• Sides of integer Heronian triangles [prime(A068964(n)), prime(A068964(n)+1), a(n)] with area A068966(n).at n=21A068965
• Even side of integer-sided triangle such that the area is an integer and two sides are twin primes.at n=13A257547
• Expansion of (Product_{k>0} (1 - x^(5*k)) / (1 - x^k))^5 in powers of x.at n=14A285928