-1286

Appears in sequences

• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 8.at n=37A060027
• Triangle read by rows: n-th row (n>=0) gives coefficients of characteristic polynomial of n X n generalized Cartan matrix M defined in Comments.at n=50A136678
• G.f.: Sum_{n=-oo..+oo} x^n * (1 - x^n)^(3*n).at n=39A268298
• a(n) = Sum_{k=0..floor(n/8)} (-1)^k*binomial(n,8*k).at n=13A307044
• a(n) = Sum_{k=0..floor(n/10)} (-1)^k * binomial(n-5*k,5*k).at n=18A348310