30381335

Appears in sequences

• Numerators of continued fraction convergents to sqrt(512).at n=13A041978
• Bisection (even part) of Chebyshev sequence with Diophantine property.at n=9A077240
• Combined Diophantine Chebyshev sequences A077240 and A077239.at n=18A077242
• a(n) = ((5 + 2*sqrt(2))*(1 + sqrt(2))^n + (5 - 2*sqrt(2))*(1 - sqrt(2))^n)/2.at n=18A163607