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%I #6 Mar 31 2012 14:39:52
%S 4,22,53,129,2227,1357200840
%N Indices of primes of form 3^p - 2.
%H <a href="http://www.borve.org/primeness/intro.html">Exploring Primeness Project</a>
%e The second prime that is 2 less than a power of 3 is 79, which is p(22), so 22 is second on the list.
%Y Cf. A014232.
%K nonn
%O 1,1
%A _Neil Fernandez_