51077

Appears in sequences

• Number of orbits of length n under the map whose periodic points are counted by A001641.at n=24A060166
• a(n) = 4*prime(n)^2+1.at n=29A060429
• Positive numbers y such that y^2 is of the form x^2+(x+337)^2 with integer x.at n=9A159574
• a(n) = (n^2+1)^2+1.at n=15A178390
• Numbers of the form n^2 + 1 without prime divisors of the form a^2 + 1.at n=21A217279