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A246728
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Decimal expansion of r_7, the 7th smallest radius < 1 for which a compact packing of the plane exists, with disks of radius 1 and r_7.
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7
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5, 3, 3, 2, 9, 6, 4, 1, 6, 6, 6, 0, 3, 1, 2, 8, 6, 7, 6, 0, 0, 8, 3, 8, 0, 9, 9, 3, 1, 8, 0, 9, 3, 5, 9, 4, 0, 9, 4, 6, 7, 6, 0, 6, 3, 8, 8, 5, 2, 8, 0, 9, 1, 6, 9, 3, 0, 2, 2, 1, 3, 5, 8, 4, 7, 5, 7, 2, 8, 7, 0, 6, 4, 9, 2, 2, 3, 4, 1, 4, 8, 6, 5, 7, 1, 3, 5, 2, 0, 7, 2, 2, 5, 1, 5, 9, 1, 3, 2, 0, 9
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OFFSET
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0,1
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LINKS
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FORMULA
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1st root of 8x^3 + 3x^2 - 2x - 1.
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EXAMPLE
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0.53329641666031286760083809931809359409467606388528091693...
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MATHEMATICA
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RealDigits[Root[8x^3 + 3x^2 - 2x - 1, x, 1], 10, 101] // First
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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