18874261

Appears in sequences

• Expansion of 1/((1+x)^7 - x^7).at n=21A049018
• Expansion of x*(1-3*x)*(1-x)/(1-7*x+14*x^2-7*x^3).at n=13A122068
• a(n) = Sum_{k=0..floor(n/7)} (-1)^k*binomial(n,7*k).at n=27A307041
• First term of n-th difference sequence of (floor(k*e)), k >= 0.at n=27A325734