A138687 Composite n with no prime of the form 2n + p^2 for any prime p.

28, 34, 55, 58, 76, 88, 100, 106, 118, 133, 145, 148, 160, 166, 178, 184, 202, 208, 214, 232, 238, 244, 253, 259, 262, 265, 268, 286, 298, 301, 310, 328, 340, 343, 352, 358, 361, 364, 370, 385, 388, 391, 403, 412, 418, 430, 442, 445, 448, 454, 475, 478, 490

Offset: 1

Author

Artur Jasinski, Mar 26 2008

Keywords

• nonn

Crossrefs

Cf. A138479, A138685, A138686.

Formula

Composite members of A138685.

Extensions

Typo corrected by Michel Marcus, Nov 04 2013