A181570 Primes in A050798.

7, 13, 17, 23, 31, 37, 41, 53, 67, 89, 97, 103, 109, 113, 127, 137, 149, 151, 163, 167, 179, 197, 211, 223, 227, 229, 241, 263, 269, 277, 281, 283, 311, 331, 347, 359, 367, 373, 383, 389, 397, 419, 431, 433, 439, 479, 491, 503, 509, 541, 547, 587, 601, 617, 619, 653, 673, 677, 683, 691, 709

Offset: 1

Author

Jonathan Vos Post, Jan 29 2011

Keywords

• nonn
• easy

Comments

Primes p such that p^2 + 1 is expressible as the sum of two nonzero squares in exactly two ways.

Crossrefs

Cf. A000040, A000161, A050798.

Formula

A050798 INTERSECTION A000040. {p in A000040 such that A000161(p^2 + 1) = 2}.