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A052199
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Numbers that are expressible as the sum of 2 distinct positive squares in more ways than any smaller number.
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7
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1, 5, 65, 325, 1105, 5525, 27625, 71825, 138125, 160225, 801125, 2082925, 4005625, 5928325, 29641625, 77068225, 148208125, 243061325, 1215306625, 3159797225, 6076533125, 12882250225, 53716552825, 64411251125, 167469252925, 322056255625, 785817263725
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| Donald S. McDonald, Postings to sci.math newsgroup, Feb 21, 1995 and Dec 04, 1995.
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LINKS
| Ray Chandler, Table of n, a(n) for n = 1..94
Donald S. McDonald, World Mathematical Year 2000 Poster Competition
G. Xiao, Two squares
Index entries for sequences related to sums of squares
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EXAMPLE
| 65 = 1^2+8^2 = 4^2+7^2, the smallest expressible in two ways, so 65 is in the sequence.
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CROSSREFS
| Cf. A001983, A007511. Subsequence of A054994. Where records occur in A025441; corresponding number of ways is A060306.
Sequence in context: A126955 A091105 A071902 * A093195 A195579 A061184
Adjacent sequences: A052196 A052197 A052198 * A052200 A052201 A052202
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KEYWORD
| nonn
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AUTHOR
| Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), Jan 28 2000
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EXTENSIONS
| More terms from Randall L. Rathbun, Jan 18 2002
Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 12 2012
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