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A176790
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Honaker primes of the form n^2+1.
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2
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3137, 4357, 13457, 80657, 115601, 184901, 309137, 341057, 1008017, 1073297, 4227137, 5541317, 11806097, 16974401, 18576101, 22848401, 24443137, 24542117, 27625537, 28132417
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OFFSET
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1,1
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COMMENTS
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The intersection of A033548 with A002522 or with A002496.
The list of associated n is:
56, 66, 116, 284, 340, 430, 556, 584, 1004, 1036, 2056,...
The associated indices in A002496 are:
14, 15, 21, 48, 53, 61, 73, 76, 113, 115, 215, 243, 341, 395, 414,...
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REFERENCES
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M. Aigner: Diskrete Mathematik, Vieweg u. Teubner, 6. Aufl., 2006
E. Grosswald: Representations of Integers as Sums of Squares, Springer-Verlag, Berlin, 1985
H. Scheid: Zahlentheorie, Spektrum Akademischer Verlag, 4. Aufl., 2006
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LINKS
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Table of n, a(n) for n=1..20.
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EXAMPLE
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a(1) = 3137 = 56^2+1 = A033548(24).
a(2) = 4357 = 66^2+1 = A033548(31).
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CROSSREFS
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Cf. A000040, A002496, A033548, A176012, A176111, A176465
Sequence in context: A045075 A071143 A061048 * A086103 A031644 A031554
Adjacent sequences: A176787 A176788 A176789 * A176791 A176792 A176793
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KEYWORD
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base,nonn
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AUTHOR
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Ulrich Krug (leuchtfeuer37(AT)gmx.de), Apr 26 2010
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EXTENSIONS
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Comments tightened by R. J. Mathar, Jun 07 2010
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STATUS
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approved
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