| 7, 11, 13, 14, 17, 19, 21, 22, 26, 28, 29, 31, 32, 33, 40, 41, 43, 44, 45, 46, 47, 48, 49, 50, 51, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 69, 70, 71, 72, 73, 74, 75, 76, 78, 79, 81, 82, 83, 84, 85, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 100
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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H. T. Croft, K. J. Falconer and R. K. Guy: Unsolved problems in geometry, Springer, New York, 1991.
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LINKS
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D. Boll, Optimal Packing Of Circles And Spheres
E. Friedman, Erich's Packing Center
C. D. Maranas, C. A. Floudas and P. M. Pardalos, New results in the packing of equal circles in a square, Discrete Mathematics 142 (1995), p. 287-293.
K. J. Nurmela and P. R. J. Ostergard, Packing up to 50 equal circles in a square, Discrete Comput. Geom. 18 (1997) 1, p. 111-120.
E. Specht, www.packomania.com
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CROSSREFS
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Sequence in context: A091901 A072823 A110547 this_sequence A028784 A119393 A155501
Adjacent sequences: A051657 A051658 A051659 this_sequence A051661 A051662 A051663
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KEYWORD
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nonn
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AUTHOR
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Eckard Specht (eckard.specht(AT)physik.uni-magdeburg.de)
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EXTENSIONS
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I do not know how many of these values have been rigorously proved - N. J. A. Sloane (njas(AT)research.att.com).
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