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A276732 Primes p such that (p + 1)/10 is also prime. 1

%I #9 Sep 17 2016 01:21:05

%S 19,29,109,229,409,709,829,1009,1069,1129,1489,1669,1789,2269,2389,

%T 2689,3109,3169,3469,3529,3889,4789,4909,5209,5569,5689,5869,6469,

%U 6529,6829,8089,8209,8269,8389,8629,9109,9769,9829,10909,12289,12589,12829,12889,13009,13669,13729,14389

%N Primes p such that (p + 1)/10 is also prime.

%H Zak Seidov, <a href="/A276732/b276732.txt">Table of n, a(n) for n = 1..9259</a>

%F a(n) = 10*A158017(n)-1.

%t Select[Prime@ Range@ 1800, PrimeQ[(# + 1)/10] &] (* _Michael De Vlieger_, Sep 16 2016 *)

%Y Cf. A137516, A158017.

%K nonn

%O 1,1

%A _Zak Seidov_, Sep 16 2016

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Last modified April 19 14:10 EDT 2024. Contains 371792 sequences. (Running on oeis4.)