50529027

Appears in sequences

• Sierpiński's triangle (Pascal's triangle mod 2) converted to decimal.at n=25A001317
• Divisors of 2^32 - 1 (for a(1) to a(31), the 31 regular polygons with an odd number of sides constructible with ruler and compass).at n=25A004729
• Bisection of A001317.at n=12A038192
• Odd values of n for which a regular n-gon can be constructed by compass and straightedge.at n=24A045544
• Smallest number whose Euler totient is divisible by 2^n.at n=25A053576
• Numbers of the form A001317(t), excluding those at places of the form t=m*(2^k-1), m>=0, k>=2.at n=14A177960
• Distinct numbers appearing in A212200 in their order of appearance.at n=20A212203
• Value of row n in triangle A166360 when seen as binary number.at n=25A230116
• a(n) is the smallest composite n-Lehmer number.at n=23A234936
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 22", based on the 5-celled von Neumann neighborhood.at n=29A274473
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 126", based on the 5-celled von Neumann neighborhood.at n=27A274993
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 462", based on the 5-celled von Neumann neighborhood.at n=28A282388