cp's OEIS Frontend

A231578 Sequence of pairs k,g such that k is the smallest and k*2^n+1-g, k*2^n+1, k*2^n+1+g are three consecutive primes in arithmetic progression.

%I A231578 #16 Nov 28 2013 15:35:16
%S A231578 105,12,1,2,219,6,37,6,245,12,109,6,39,6,1,6,245,12,669,6,9,6,45,12,5,
%T A231578 12,1413,6,297,6,37,6,2019,18,603,24,467,6,897,6,303,6,1687,12,77,30,
%U A231578 1437,6,711,36,2293,6,315,42,525,12,1799,12,4137,30,1019,6
%N A231578 Sequence of pairs k,g such that k is the smallest and k*2^n+1-g, k*2^n+1, k*2^n+1+g are three consecutive primes in arithmetic progression.
%H A231578 Pierre CAMI, <a href="/A231578/b231578.txt">Table of n, a(n) for n = 1..1300</a>
%H A231578 Pierre CAMI, <a href="/A231578/a231578.txt">PFGW Script</a>
%e A231578 1*2^8+1-6=251, 1*2^8+1=257, 1*2^8+1+6=263, so the pair for n=8 is 1,6.
%Y A231578 Cf. A231576.
%K A231578 nonn
%O A231578 1,1
%A A231578 _Pierre CAMI_, Nov 11 2013