A082566 Primes p such that p, 2p+1, 4p+3 are palindromic primes.

2, 19091918181818181919091, 1908080909080809090808091, 18180808191908180919180808181, 1808080818180818180818180808081, 1808190918090818180908190918081, 18080818080919081918091908081808081

Offset

1,1

Links

Table of n, a(n) for n=1..7.

H. Dubner, Palindromic Sophie Germain Primes

Crossrefs

Cf. A007700.

Subsequence of A082520.

Sequence in context: A176944 A068138 A309968 * A273400 A371468 A118019

Adjacent sequences: A082563 A082564 A082565 * A082567 A082568 A082569

Keyword

base,nonn

Author

Lekraj Beedassy, May 06 2003

Extensions

a(1)=2 inserted by Dmitry Petukhov, May 14 2021

Status

approved