-6299

Appears in sequences

• Expansion of tanh(log(1+sin(x))).at n=9A009771
• Expansion of tanh(log(1+sinh(x))).at n=9A009772
• Hankel transform of a simple Catalan convolution.at n=7A167423
• a(n) = Sum_{k=0..floor(n/4)} (-1)^k * (n-3*k)!/(n-4*k)!.at n=27A358605
• E.g.f. satisfies A(x) = exp(x * (1 + x/A(x))).at n=7A365035