272768

Appears in sequences

• a(n+2) = 2*a(n+1) + 2*a(n); a(0) = -1, a(1) = 1.at n=15A028860
• a(n)*a(n+3) - a(n+1)*a(n+2) = 2^n, given a(0) = 1, a(1) = 1, and a(2) = 1.at n=15A080876
• Sylvester dividends for A002605.at n=25A105608
• Expansion of g.f. (1-2*x^2)/(1-2*x-2*x^2).at n=13A152035
• Expansion of 2*x^2 / (1-2*x-2*x^2).at n=14A293007
• Denominators of the convergents given by treating A241773 as continued fraction coefficients after the leading 0.at n=13A391510