51524

Appears in sequences

• Number of dissections of a convex n-gon by nonintersecting diagonals into an even number of regions.at n=8A100299
• Abs(square of n-th prime minus cube of n-1).at n=45A151911
• Approximation of the 2-adic integer arctan(4) up to 2^n.at n=16A309756
• Approximation of the 2-adic integer arctan(4) up to 2^n.at n=17A309756