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Search: id:A048610
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| A048610 |
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Smallest number which is the sum of two positive squares in >= n ways.
(Formerly M2172)
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+0
5
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| 2, 50, 325, 1105, 5525, 5525, 27625, 27625, 71825, 138125, 160225, 160225, 801125, 801125, 801125, 801125, 2082925, 2082925, 4005625, 4005625, 5928325, 5928325, 5928325, 5928325, 29641625, 29641625, 29641625, 29641625, 29641625, 29641625
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 50, p. 19, Ellipses, Paris 2008.
J. Meeus, Problem 1375, J. Rec. Math., 18 (No. 1, 1985), p. 70.
Problem 590, J. Rec. Math., 11 (No. 2, 1978), p. 137.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Index entries for sequences related to sums of squares
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EXAMPLE
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2=1^2+1^2; 50=1^2+7^2=5^2+5^2; 325=1^2+18^2=6^2+17^2=10^2+15^2.
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CROSSREFS
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Cf. A016032, A007511.
Sequence in context: A027619 A076267 A050800 this_sequence A007511 A016032 A080299
Adjacent sequences: A048607 A048608 A048609 this_sequence A048611 A048612 A048613
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Robert G. Wilson v (rgwv(AT)rgwv.com), Jud McCranie (j.mccranie(AT)comcast.net)
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