29756910

Appears in sequences

• Number of polyhexes with n hexagons, having reflectional symmetry (see Harary and Read for precise definition).at n=26A002215
• Catafusenes (see reference for precise definition).at n=26A044044
• Expansion of 1 - 3*x - sqrt(1 - 6*x + 5*x^2).at n=13A122737