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A176790 Honaker primes of the form n^2+1. 2
3137, 4357, 13457, 80657, 115601, 184901, 309137, 341057, 1008017, 1073297, 4227137, 5541317, 11806097, 16974401, 18576101, 22848401, 24443137, 24542117, 27625537, 28132417 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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,...

REFERENCES

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

LINKS

Table of n, a(n) for n=1..20.

EXAMPLE

a(1) = 3137 = 56^2+1 = A033548(24).

a(2) = 4357 = 66^2+1 = A033548(31).

CROSSREFS

Cf. A000040, A002496, A033548, A176012, A176111, A176465

Sequence in context: A061048 A250849 A238499 * A086103 A267721 A031554

Adjacent sequences:  A176787 A176788 A176789 * A176791 A176792 A176793

KEYWORD

base,nonn

AUTHOR

Ulrich Krug (leuchtfeuer37(AT)gmx.de), Apr 26 2010

EXTENSIONS

Comments tightened by R. J. Mathar, Jun 07 2010

STATUS

approved

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Last modified August 26 05:50 EDT 2019. Contains 326330 sequences. (Running on oeis4.)