110209

Appears in sequences

• Number of n X 4 binary arrays without the pattern 0 1 diagonally or vertically.at n=34A188838
• G.f. A(x) satisfies: A(x) = x * Product_{k>=1} (1 + k*A(x^k)).at n=14A308372
• The number of vertices on a Reuleaux triangle formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=13A340644