1761923521

Appears in sequences

• Larger of two sides in a (k,k,k-1)-integer-sided triangle with integer area.at n=8A103772
• a(n) = 3*a(n-1) + 3*a(n-2) - a(n-3); a(0)=1, a(1)=1, a(2)=5.at n=17A120893
• Hypotenuses of Pythagorean triples in A195499 and A195503.at n=15A195531