1545463

Appears in sequences

• Number of Barlow packings that repeat after exactly n layers.at n=28A011768
• Number of Barlow packings that repeat after n (or a divisor of n) layers.at n=28A114438
• Number of distinct hexaflexagons of length n.at n=26A286110
• Number of different closest packings of equal spheres for hexagonal crystals having repeat period n.at n=28A371991