A157183 Primes in A028883, p=m^2-7, such that following prime is m^2+1.

2909, 4349, 8093, 24329, 57593, 72893, 93629, 224669, 324893, 331769, 404489, 562493, 608393, 1166393, 1742393, 1822493, 4137149, 4639709, 5788829, 7289993, 7617593, 10265609, 10497593, 10929629, 12110393, 12362249, 14107529, 14243069

Offset

1,1

Comments

A subset of { A028883(n) | A028882(n) is in A005574 }.

Links

Table of n, a(n) for n=1..28.

Prog

(PARI) forstep( m=4, 10^4, 2, ispseudoprime( m^2-7 )|next; ispseudoprime( m^2+1 )|next; nextprime(m^2-5)==(m^2+1) & print1(m^2-7, ", "))

Crossrefs

Sequence in context: A253795 A251477 A210072 * A054829 A289228 A250953

Adjacent sequences: A157180 A157181 A157182 * A157184 A157185 A157186

Keyword

nonn

Author

M. F. Hasler, Mar 14 2009

Status

approved