A052293 Numbers of the form 11 + x^2 + x or 11 + 2*x^2.

11, 13, 17, 19, 23, 29, 31, 41, 43, 53, 61, 67, 83, 101, 109, 121, 139, 143, 167, 173, 193, 211, 221, 251, 253, 283, 299, 317, 349, 353, 391, 403, 431, 461, 473, 517, 523, 563, 589, 611, 659, 661, 713, 733, 767, 811, 823, 881, 893, 941, 979, 1003, 1067

Offset: 1

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Feb 08 2000

Keywords

• nonn
• easy

Programs

Mathematica

Union[Flatten[Table[{11+x^2+x,11+2x^2},{x,0,40}]]] (* Harvey P. Dale, May 06 2013 *)

Extensions

Corrected and extended by James Sellers, Feb 10 2000