login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Daughter primes of order 4.
10

%I #7 Mar 15 2020 05:08:00

%S 3,5,13,19,23,31,43,59,61,71,83,103,113,131,163,173,181,199,223,229,

%T 233,239,241,251,281,283,311,331,353,409,433,439,463,499,503,541,563,

%U 569,619,643,653,659,691,701,709,743,761,773,853,859,863,911,919,929,941

%N Daughter primes of order 4.

%C For smallest daughter primes of order n see A136019 (also definition). For daughter primes of order 1 see A088878. For daughter primes of order 2 see A136051. For daughter primes of order 3 see A136052.

%H Amiram Eldar, <a href="/A136053/b136053.txt">Table of n, a(n) for n = 1..10000</a>

%t n = 4; a = {}; Do[If[PrimeQ[(Prime[k] + 2n)/(2n + 1)], AppendTo[a, (Prime[k] + 2n)/(2n + 1)]], {k, 1, 1500}]; a

%Y Cf. A088878, A091180, A136019, A136020, A136051, A136052, A136054, A136055, A136056, A136057, A136058, A136059, A136060.

%K nonn

%O 1,1

%A _Artur Jasinski_, Dec 12 2007