%I A004628
%S A004628 1,7,23,31,47,49,71,79,103,127,151,161,167,191,199,217,
%T A004628 223,239,263,271,311,329,343,359,367,383,431,439,463,479,
%U A004628 487,497,503,529,553,599,607,631,647,713,719,721,727,743
%N A004628 Divisible only by primes congruent to 7 mod 8.
%Y A004628 Sequence in context: A144517 A091531 A036259 this_sequence A089199 A014663 
               A141175
%Y A004628 Adjacent sequences: A004625 A004626 A004627 this_sequence A004629 A004630 
               A004631
%K A004628 nonn
%O A004628 0,2
%A A004628 N. J. A. Sloane (njas(AT)research.att.com).