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A177979
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Smallest number k such that A002313(n) divides k^2+1.
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3
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1, 2, 5, 4, 12, 6, 9, 23, 11, 27, 34, 22, 10, 33, 15, 37, 44, 28, 80, 19, 81, 14, 107, 89, 64, 16, 82, 60, 53, 138, 25, 114, 148, 136, 42, 104, 115, 63, 20, 143, 29, 179, 67, 109, 48, 208, 235, 52, 118, 86, 24, 77, 125, 35, 194, 154, 149, 106, 58, 26, 135, 96, 353, 87, 39
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OFFSET
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1,2
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COMMENTS
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REFERENCES
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Friedhelm Padberg: Elementare Zahlentheorie. Spektrum Akademischer Verlag, Berlin Heidelberg, 1996
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LINKS
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EXAMPLE
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1^2+1 = 2 which is divided by A002313(1) which adds 1 to the sequence.
2^2+1 = 5 is divided by A002313(2) which adds 2 to the sequence.
27^2+1 = 730 is divided by A002313(10) which adds 27 to the sequence.
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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Eva-Maria Zschorn (e-m.zschorn(AT)zaschendorf.km3.de), May 16 2010
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EXTENSIONS
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Disentangled variables in the definition - R. J. Mathar, Jun 07 2010
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STATUS
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approved
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