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Search: id:A060306
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| A060306 |
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Number of ways in which n-th number expressible as sums of 2 distinct nonzero squares in more ways than any smaller integer may be so represented. |
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+0
2
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| 1, 2, 3, 4, 6, 8, 9, 10, 12, 16, 18, 20, 24, 32, 36, 40, 48, 64, 72, 80, 96, 108, 128, 144, 160, 192, 216, 256, 288, 320, 384, 432, 480, 512, 576, 640, 768, 864, 960, 1024, 1152, 1280, 1440, 1536, 1728, 1920, 2048, 2304, 2560, 2592
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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Choosing among numbers in the range 4900 through 7230, for instance, we have 4901 = 1^2 + 70^2 = 26^2 + 65^2 = 49^2 + 50^2 [ 3 ways ]; 5081 = 40^2 + 50^2 [ 1 way ]; 5525 = 7^2 + 74^2 = 14^2 + 73^2 = 22^2 + 71^2 = 25^2 + 70^2 = 41^2 + 62^2 = 50^2 + 55^2 [ 6 ways ]; 6497 = 16^2 + 79^2 = 49^2 + 64^2 [ 2 ways ]; 7225 = 13^2 + 84^2 = 36^2 + 77^2 = 40^2 + 75^2 = 51^2 + 68^2 [ 4 ways ].
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CROSSREFS
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Cf. A052199.
Number of pairs of distinct squares for the n-th entry in A052199.
Sequence in context: A064150 A067023 A002183 this_sequence A117925 A135571 A138394
Adjacent sequences: A060303 A060304 A060305 this_sequence A060307 A060308 A060309
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KEYWORD
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nonn
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Mar 26 2001
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EXTENSIONS
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More terms from Randall L. Rathbun, Jan 18 2002
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