192060

Appears in sequences

• a(n) = 10*a(n-1) - a(n-2) with a(0) = 0, a(1) = 2.at n=6A001078
• Denominators of continued fraction convergents to sqrt(6).at n=11A041007
• Possibly the only integers of the form sqrt(m^2*(m^2-1)*2/3) [only checked for the first 5 terms].at n=3A072818
• Number of (n+2) X 6 binary arrays avoiding patterns 001 and 110 in rows and columns.at n=8A202048
• Square root of floor(A055851(n)/6).at n=19A204519
• The Wiener index of the para-polyphenyl chain with n hexagons (see the Dou et al. and the Deng references).at n=19A216112