-53760

Appears in sequences

• Glaisher's function U(n).at n=20A002612
• A triangular sequence from an expansion of coefficients of the function: p(x,t)=Exp(x*g*(t))*(1-f(t)^2);f(t)=4/(t^4-1);g(t)=t. (based on the Weierstrass functions of Scherk's minimal surface).at n=61A137520
• A triangular sequence of coefficients of an expansion of a Mach wave as a traveling wave in a medium: (vt')^2 = vp*vg = c^2 - (gamma-1)/(gamma+1)*vt^2; Substituting: vt -> exp(t*x); gamma->t; c->1; p(x,t) = 1 - exp(2*x*t)*(t - 1)/(1 + t).at n=39A138024
• Triangle T(n,m) = coefficient of x^n in expansion of (x^2*cotan(x))^m = sum(n>=m, T(n,m) x^n * m!^2/n!^2).at n=21A199542
• Expansion of exp( Sum_{n>=1} -sigma(8*n)*x^n/n ) in powers of x.at n=34A283168