51475776

Appears in sequences

• Sinh(x) / cos(x) = Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)!.at n=6A002084
• Expansion of e.g.f. exp(x)/cos(x).at n=13A003701
• Boustrophedon transform of n mod 2.at n=13A062161
• Expansion of e.g.f. (1 + sinh(x)) / cos(x).at n=13A336024
• E.g.f. (exp(x) - 1)/cos(x).at n=12A380053