-427

Appears in sequences

• Expansion of e.g.f.: log(1+tanh(x))/cosh(x).at n=7A009392
• Triangle read by rows: T(n, k) = (-2)^k*binomial(n, k)*Euler(k, 1/2).at n=34A081658
• Euler-Seidel matrix T(k,n) with start sequence e.g.f. 2x/(1+e^(2x)), read by antidiagonals.at n=28A099028
• Euler-Seidel matrix T(k,n) with start sequence e.g.f. 2x/(1+e^(2x)), read by antidiagonals.at n=29A099028
• 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=6A104033
• Exponential Riordan array (sech(x),x).at n=29A119879
• Expansion of e.g.f.: (1+x)*sech(x).at n=7A119882
• Irregular triangle read by rows: row n is the expansion of (1 + 2*x - x^2)^n.at n=55A123199
• Triangle of coefficients of a Pascal sum of recursive orthogonal Hermite polynomials given in Hochstadt's book: P(x, n) = x*P(x, n - 1) - n*P(x, n - 2); p2(x,n)=Sum[Binomial[n,m],{m,0,n}].at n=61A136645
• Nonzero coefficients of the Swiss-Knife polynomials for the computation of Euler, tangent, and Bernoulli numbers (triangle read by rows).at n=19A153641
• Riordan array (2c(-x)-1, xc(-x)^3), c(x) the g.f. of A000108.at n=24A159971
• Numerator of Laguerre(n, 12).at n=6A160671
• Irregular triangle of coefficients of Product_{j=1..n} (x^j - x - 1), read by rows.at n=39A166919
• Numerator in fraction A180878/A060818.at n=10A180878
• Numerator in fraction A180878/A060818.at n=11A180878
• Triangle, read by rows, such that row n equals the coefficients of x^(n^2+n-1+k) in F(x,n) for k = 1..n, where F(x,n) = (1 + x*F(x,n))*(1 + x^n/F(x,n)), for n>=1.at n=21A200171
• Triangle of coefficients of the Pbar polynomials, read by rows.at n=6A245244
• Array T(n,k) read by antidiagonals, where T(0,k) = -A226158(k) and T(n+1,k) = 2*T(n,k+1) - T(n,k).at n=29A245683
• Array T(n,k) read by antidiagonals, where T(0,k) = -A226158(k) and T(n+1,k) = 2*T(n,k+1) - T(n,k).at n=37A245683
• Array T(n,k) read by antidiagonals, where T(0,k) = -A226158(k) and T(n+1,k) = 2*T(n,k+1) - T(n,k).at n=38A245683