406588

Appears in sequences

• Number of alternating compositions, i.e., compositions with alternating increases and decreases, starting with either an increase or a decrease.at n=29A025047
• G.f. A(x) satisfies: A( A(x)^2 ) = C(x) * A(x), where C(x) = x + C(x)^2, with A(0)=0, A'(0)=1.at n=13A272483
• Number of alternating compositions of n, including twins (x,x).at n=29A344604