90131

Appears in sequences

• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2 + (x+289)^2 = y^2.at n=17A207059
• 2*a(n) is the least number where k sets a new record such that 2*a(n)-k and 2*a(n)+k are prime and at least one of 2*a(n)-j and 2*a(n)+j is composite for all 0<j<k.at n=27A307881
• Row 3 of A328464: a(n) = A276156(8n - 4) / 6.at n=27A328466
• Semiprimes that are (perimeter^2 - hypotenuse^2) of a Pythagorean triple.at n=8A389589