199360982

Appears in sequences

• Expansion of e.g.f. tan(x)*sin(x) (even powers only).at n=7A009744
• Expansion of e.g.f. tanh(x)*exp(x).at n=14A009832
• Number of fixed points in all reverse alternating (i.e., up-down) permutations of {1,2,...,n}.at n=13A162977