%I #9 Nov 14 2014 18:06:25
%S 5,47,2399,823541,5764799,13841287199,4747561509941,
%T 459986536544739960976799,157775382034845806615042741,
%U 97327453648743672783790144527749033795901408624680013074608083129650399
%N Primes of form 7^n-2.
%C The exponents n are listed in A090669, cf. formula. [From _M. F. Hasler_, Nov 26 2009]
%C The next term (a(11)) has 83 digits. - _Harvey P. Dale_, Nov 14 2014
%F a(n)=7^A090669(n)-2. [From _M. F. Hasler_, Nov 26 2009]
%t Select[7^Range[90]-2,PrimeQ] (* _Harvey P. Dale_, Nov 14 2014 *)
%Y Cf. A014232.
%K nonn
%O 1,1
%A _Arnaud Vernier_, May 23 2004
%E Terms beyond a(6) from _M. F. Hasler_, Nov 26 2009