login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A139498 Primes of the form x^2 + 17x*y + y^2 for x and y nonnegative. 1
19, 61, 139, 199, 229, 271, 349, 499, 541, 571, 619, 631, 691, 709, 739, 769, 859, 919, 1051, 1069, 1201, 1279, 1429, 1489, 1531, 1621, 1669, 1759, 1831, 1879, 1999, 2011, 2221, 2239, 2251, 2281, 2341, 2551, 2671, 2791, 2851, 2971, 3019, 3049, 3079, 3121 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

MATHEMATICA

a = {}; w = 17; k = 1; Do[Do[If[PrimeQ[n^2 + w*n*m + k*m^2], AppendTo[a, n^2 + w*n*m + k*m^2]], {n, m, 400}], {m, 1, 400}]; Union[a] (*Artur Jasinski*)

CROSSREFS

Cf. A139489, A007645, A068228, A007519, A033212, A033212, A107152, A107008, A033215, A107145, A139490, A139491.

Sequence in context: A048890 A127854 A092327 * A106087 A201812 A262317

Adjacent sequences:  A139495 A139496 A139497 * A139499 A139500 A139501

KEYWORD

nonn

AUTHOR

Artur Jasinski, Apr 24 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 7 07:15 EST 2016. Contains 278841 sequences.