365688832

Appears in sequences

• Expansion of e.g.f. tanh(tanh(x)*tan(x)) (even powers only).at n=3A012673
• Expansion of e.g.f. tanh(x)*tan(x), coefficients of powers x^(4*n+2).at n=3A024342
• Duplicate of A012673.at n=3A024344