55625

Appears in sequences

• Numbers that are the sum of 2 nonzero squares in exactly 5 ways.at n=19A025288
• Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways.at n=15A025306
• Expansion of (1-x)*(1-2*x)/(1-5*x+5*x^2).at n=9A052936
• Numbers k such that the concatenation of k with 4*k gives a square.at n=8A115535
• a(1)=5, a(2)=5, a(n)=5*a(n-1) + 5*a(n-2).at n=6A189749
• Numbers that are the sum of 2 squares in exactly 5 ways.at n=28A294716
• Smallest number k with A355915(k) = n.at n=42A356792