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Primes that can be represented in the form | 2^m +/- 3^n |.
2

%I #3 Mar 31 2012 10:23:47

%S 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,59,61,67,73,79,83,89,97,101,

%T 113,127,131,137,139,179,211,227,229,239,241,251,257,269,283,307,337

%N Primes that can be represented in the form | 2^m +/- 3^n |.

%e 2 = 2^0 + 3^0;

%e 47 = 2^7 - 3^4;

%e 53 cannot be written as |2^m+/-3^n| up to m = 30 and n = 19.

%Y Cf. A004051. Complement of A007644.

%K nonn

%O 1,1

%A _Lei Zhou_, Jan 26 2005

%E Edited and extended by _Robert G. Wilson v_, Jan 26 2005