91987

Appears in sequences

• The first of 33 consecutive positive integers the sum of the squares of which is a square.at n=13A269449
• a(n) = 2*a(n-1) + a(n-2) + a(n-3) + a(n-4), a(0)=4, a(1)=2, a(2)=6, a(3)=17.at n=12A331413