200477279

Appears in sequences

• a(n) = 3*a(n-1) + a(n-2) with a(0) = 2, a(1) = 3.at n=16A006497
• Numerators of continued fraction convergents to sqrt(13).at n=25A041018
• Numerators of continued fraction convergents to sqrt(117).at n=15A041212
• Numerators of continued fraction convergents to sqrt(637).at n=13A042222
• A Chebyshev or generalized Fibonacci sequence.at n=8A057076
• a(n) is the greatest divisor of A006190(n) that is coprime to A006190(m) for all positive integers m < n.at n=31A309525
• a(n) is the numerator of the Heron sequence with h(0)=3.at n=4A319749