1727180

Appears in sequences

• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+73)^2 = y^2.at n=18A129289
• a(n) = (3^n-1)*(n+1)/4.at n=11A261064
• Expansion of e.g.f. x*exp(x)*cosh(x)*sinh(x).at n=13A360035
• Expansion of e.g.f. x*exp(x)*(sinh(x))^2.at n=13A360036