18819920

Appears in sequences

• a(n) = 10*a(n-1) - a(n-2) with a(0) = 0, a(1) = 2.at n=8A001078
• Denominators of continued fraction convergents to sqrt(6).at n=15A041007
• Denominators of continued fraction convergents to sqrt(54).at n=15A041093
• Possibly the only integers of the form sqrt(m^2*(m^2-1)*2/3) [only checked for the first 5 terms].at n=4A072818
• Square root of floor(A055851(n)/6).at n=25A204519
• Denominators of rational approximations to sqrt(6) obtained from Newton's method.at n=4A244015