10976840

Appears in sequences

• Numerators of continued fraction convergents to sqrt(72).at n=8A041126
• Numerators of continued fraction convergents to sqrt(648).at n=8A042244
• Numerators of continued fraction convergents to sqrt(968).at n=8A042872
• a(n) = sqrt(2)*( (3+2*sqrt(2))^n - (3-2*sqrt(2))^n ).at n=9A081554
• a(n) = Pell(n) * A004018(n) for n>=1 with a(0)=1, where A004018(n) is the number of ways of writing n as a sum of 2 squares.at n=18A205508
• a(n) = Pell(n)*A113973(n) for n>=1, with a(0)=1, where A113973 lists the coefficients in phi(x^3)^3/phi(x) and phi() is a Ramanujan theta function.at n=18A209449
• a(n) = Pell(n)*A034896(n) for n >= 1, with a(0)=1, where A034896 lists the number of solutions to a^2 + b^2 + 3*c^2 + 3*d^2 = n.at n=18A209451
• a(n) = Pell(n)*A002652(n) for n>=1, with a(0)=1, where A002652 lists the coefficients in theta series of Kleinian lattice Z[(-1+sqrt(-7))/2].at n=18A209455
• Solutions y_n to the negative Pell equation y^2 = 72*x^2 - 8.at n=4A280761
• The number of unilevel points (unique points at their height) on Delannoy paths ending when x = n.at n=18A371596