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Search: id:A025314
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| A025314 |
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Numbers that are the sum of 2 distinct nonzero squares in 4 or more ways. |
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+0
6
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| 1105, 1625, 1885, 2125, 2210, 2405, 2465, 2665, 3145, 3250, 3445, 3485, 3625, 3770, 3965, 4225, 4250, 4420, 4505, 4625, 4745, 4810, 4930, 5125, 5185, 5330, 5365, 5525, 5785, 5945, 6205, 6290, 6305, 6409, 6500, 6565, 6625, 6890, 6970, 7085, 7225, 7250
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Index entries for sequences related to sums of squares
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MATHEMATICA
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lst={}; q=-1; k=1; Do[Do[x=a^2; Do[y=b^2; If[x+y==n, If[n==q&&k==3, AppendTo[lst, n]]; If[n!=q, q=n; k=1, k++ ]], {b, Floor[(n-x)^(1/2)], a+1, -1}], {a, Floor[n^(1/2)], 1, -1}], {n, 2*7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 22 2009]
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CROSSREFS
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Sequence in context: A008688 A107519 A025295 this_sequence A025287 A025305 A052155
Adjacent sequences: A025311 A025312 A025313 this_sequence A025315 A025316 A025317
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KEYWORD
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nonn
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AUTHOR
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David W. Wilson (davidwwilson(AT)comcast.net)
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