154265

Appears in sequences

• G.f. satisfies: a(2*n) equals coefficient of x^n in A(x)^(n+1) and a(2*n+1) equals coefficient of x^(n+1) in A(x)^(n+1), for n>=0, with a(0)=1.at n=15A094600
• Expansion of e.g.f. sec(x*exp(x)).at n=8A294312