-2763

Appears in sequences

• A symmetrical triangle sequence based on:q=2/12;t(n,m,q)=12*(Binomial[n, m]*(1 - q) + (((n + m + 1)!/((n + 1)!* m!)) + ((2*n - m + 1)!/((n + 1)!*(n - m)!)))*q).at n=24A174949
• Expansion of e.g.f. exp(x)/cosh(2*x).at n=6A188458
• Expansion of e.g.f.: exp(-x) / cosh(2*x).at n=6A212435
• Triangle read by rows, coefficients of polynomials related to the Springer numbers A001586.at n=21A214554
• A signed triangle of V. I. Arnold for the Springer numbers (A001586).at n=26A256679
• A signed triangle of V. I. Arnold for the Springer numbers (A001586).at n=27A256679
• A signed triangle of V. I. Arnold for the Springer numbers (A001586).at n=34A256679
• a(n) = 4^n*Euler(n, 1/4)*2^(valuation_{2}(n + 1)).at n=6A339058
• Array read by ascending antidiagonals: A(n, k) = Sum_{j = 0..k} binomial(k, j) * Euler(j, 0) *(2*n)^j.at n=42A377666
• Array read by ascending antidiagonals: A(n, k) = (-2*n)^k * Euler(k, (n - 1)/(2*n)) for n >= 1 and A(0, k) = 1.at n=42A378066