1240209

Appears in sequences

• Numerators of continued fraction convergents to sqrt(75).at n=13A041132
• a(n) = 4*a(n-1) - a(n-2) for n>1, a(0)=3, a(1)=9.at n=10A082841
• a(n) = 4*a(n-2) - a(n-4).at n=20A083336