203256

Appears in sequences

• Expansion of (1-6*x-sqrt((1-6*x)^2-4*6*x^2))/(2*6*x^2).at n=6A107266
• Number of nXnXn triangular 0..1 arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all equal.at n=5A271400
• T(n,k)=Number of nXnXn triangular 0..k arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all equal.at n=20A271407
• a(n) = [x^n] 1/(1 - n*x - n*x^2/(1 - n*x - n*x^2/(1 - n*x - n*x^2/(1 - n*x - n*x^2/(1 - ...))))), a continued fraction.at n=6A292716