-5124

Appears in sequences

• Triangle read by rows: T(n, k) = (-2)^k*binomial(n, k)*Euler(k, 1/2).at n=51A081658
• Triangle, read by rows, equal to the matrix inverse of triangle A103327, where A103327(n,k) = binomial(2*n+1,2*k+1).at n=11A104033
• Exponential Riordan array (sech(x),x).at n=48A119879
• Nonzero coefficients of the Swiss-Knife polynomials for the computation of Euler, tangent, and Bernoulli numbers (triangle read by rows).at n=28A153641
• a(n) = 2n(19-n).at n=61A182428
• Expansion of (Product_{k>0} theta_4(q^k)/theta_3(q^k))^(1/2), where theta_3() and theta_4() are the Jacobi theta functions.at n=49A320992
• Triangle read by rows. T(n, k) = A081658(n, k) + A363393(n, k) for k > 0 and T(n, 0) = 1.at n=51A363394
• G.f. A(x) satisfies A(A(A(A(A(x))))) = x + 5*x^2 + 25*x^3.at n=7A372521