-15504

Appears in sequences

• Expansion of (1-4*x)^(9/2).at n=15A002424
• Triangle of signed numbers used for the computation of the column sequences of triangle A089504.at n=11A089505
• Eighth convolution of A115140.at n=14A115147
• Expansion of -x*(2*x - 1)*(2*x^2 - 1)*(x^3 + 2*x^2 - x - 1)/((x - 1)*(x^2 + x - 1)*(x^4 - 4*x^3 - 4*x^2 + x + 1)).at n=20A122605
• Expansion of g.f. (1+x)^2*(x^2-6*x+1)/(x-1)^4.at n=18A136264
• A symmetrical triangle of polynomial coefficients that are von Koch like: b=1/4; p(x, n) = If[Mod[n, 4] == 2, (b*x - n/2)*p(x, n - 1), If[ Mod[n, 4] == 3, (x/2 - b*n + 1/2)*p(x, n - 1), If[ Mod[n, 4] == 0, (-b*x - n/2 + b)*p(x, n - 1), (x/2 + b*n)*p(x, n - 1)]]]; q(x,n)=(p(x,n)+x^n*(p(1/x,n))/b^n.at n=37A155688
• Expansion of Sum_{k>0} x^(2*k)/(1+x^k)^6.at n=16A363614
• Square array read by ascending antidiagonals: T(n,k) = [x^(3*k)] ( (1 + x)^(n+3)/(1 - x)^(n-3) )^k for n, k >= 0.at n=26A364519
• Expansion of e.g.f. (1 + log(1+x))^3.at n=8A377396