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%I
%S 619,1069,1459,1499,1759,1789,2861,3331,3931,4177,4801,4831,5419,6229,
%T 6397,8431,8893,9067,9631,11003,11131,11789,12619,14251,15331,15889,
%U 16661,17683,17939,18269,18553,19219,19391,19507,20029,20759
%N Primes p=prime(i) of level (1,3), i.e. such that A118534(i)=prime(i-3).
%C If the i-th prime p(i) has level 1 in A117563 and 2 p(i) - p(i+1) = p(i-k), then we say that p(i) has level(1,k).
%C Subsequence of A125830 and of A162174.
%H Remi Eismann, <a href="/A118467/b118467.txt">Table of n, a(n) for n = 1..10000</a>
%e Prime(115) - prime(114) = prime(114) - prime(114-3) = 631 - 619 = 619 - 607
%Y Cf. A117563, A117876, A118464, A117078.
%K nonn
%O 1,1
%A _Rémi Eismann_, May 24 2006
%E Reworded definition and comment, following author's suggestions _M. F. Hasler_, Nov 30 2009
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