105390

Appears in sequences

• Number of ways to place non-crossing diagonals in convex (n+4)-gon so as to create no triangles or quadrilaterals.at n=15A054514
• Numbers n such that the digital sum of n is the same as the digital sum of n^2 in both base 2 and base 10.at n=35A261640
• G.f. A(x) = Sum_{n>=1} a(n)*x^(2*n-1) satisfies: A(x*R(x)) = x^2 - x^4, where A(R(x)) = x.at n=8A350474