The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.



(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A243169 Nonnegative integers of the form -x^2+6xy+3y^2. 1


%S 0,3,8,11,12,23,27,32,39,44,47,48,59,71,72,75,83,92,99,104,107,108,

%T 111,128,131,143,147,156,167,176,179,183,188,191,192,200,207,219,227,

%U 236,239,243,251,263,264,275,284,288,291,296,299,300,311,327,332,347,351,359,363,368,383,392,396,407,416,419,423,428,431,432,443,444,467,471,479,488

%N Nonnegative integers of the form -x^2+6xy+3y^2.

%C Discriminant 48.

%H N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)

%Y Primes in this sequence = A141187.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Jun 01 2014

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 25 10:09 EDT 2021. Contains 345453 sequences. (Running on oeis4.)