185556

Appears in sequences

• Expansion of (exp(3*x)-1)*(exp(2*x)-1)*(exp(x)-1).at n=7A178690
• Triangular array read by rows. T(n,k) is the number of labeled transitive relations on [n] that have exactly k symmetric points.at n=33A355783
• G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - x * A(x^4))).at n=29A367692