116302

Appears in sequences

• G.f. satisfies: A(x) = 1 + Sum_{n>=0} x^n * (1 - A(x)^(2*n))/(1 - A(x)).at n=8A228907
• The number of evenly tagged partitions: partitions of n elements together with an involution defined on the set of classes which has at most one fixed point, such that a class and its image have the same number of elements.at n=10A355194