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Search: id:A122874
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| A122874 |
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Coordinates of the constant sum parabola with the sum equal to 20. This in the fifth square domain (r = 5). itis associated with even square (2r)^2. it is noted that each square domain has five parabolas of constant sums associated with it for the lower odd square, lower pronic, even square, upper pronic, and higher odd square. the three squares have parabolas of different form than the two pronics.this may be of use in locating primes within the square domain. |
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+0
1
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| 7, 13, 8, 12, 9, 11, 10, 10, 11, 9, 12, 8, 13, 7
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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and upper square. it is noted that the sequence represents pairs of coordinates of constant sum. also they go down through all the lower square domains.
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EXAMPLE
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a(7)= 10
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CROSSREFS
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Sequence in context: A081257 A046163 A130770 this_sequence A066003 A115858 A114389
Adjacent sequences: A122871 A122872 A122873 this_sequence A122875 A122876 A122877
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KEYWORD
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easy,nonn,uned,obsc
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AUTHOR
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stuart m. ellerstein (ellerstein(AT)aol.com), Oct 23 2006
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