-36976

Appears in sequences

• Diagonal of Euler-Seidel matrix with start sequence e.g.f. 1-tanh(x).at n=5A099023
• Triangle read by rows, coefficients of the Swiss-Knife median polynomials M_{n}(x) in descending order of powers.at n=35A213736
• The infinite Seidel matrix H read by antidiagonals upwards; H = (H(n,k): n,k >= 0).at n=60A236935