263101

Properties

Appears in sequences

• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1000-1111-1000 pattern in any orientation.at n=16A146415
• Maxima of the numerators (and also of the denominators) of row n in the Schinzel-Sierpinski tree of fractions A295511.at n=14A295509
• Prime numbersat n=23075