%I A087716
%S A087716 341,1387,2047,4681,13747
%N A087716 Base 2 pseudoprimes (see A001567) of the form j*p(i)#-p(k) or j*p(i)#+p(k), 
               p(i) and p(k) primes with p(i) < p(k) < p(i+1)^2 and 0 < j < p(i+1).
%C A087716 Conjecture: sequence has only 5 terms. This has been checked for all 
               i <= 150.
%e A087716 2*7# - 79 = 341
%e A087716 7*7# - 83 = 1387
%e A087716 10*7# - 53 = 2047
%e A087716 2*11# + 61 = 4681
%e A087716 6*11# - 113 = 13747
%Y A087716 Cf. A001567, A087714, A087715, A087728.
%Y A087716 # denotes primorials; see A002110.
%Y A087716 Sequence in context: A050217 A086837 A020230 this_sequence A084653 A143688 
               A086250
%Y A087716 Adjacent sequences: A087713 A087714 A087715 this_sequence A087717 A087718 
               A087719
%K A087716 nonn
%O A087716 1,1
%A A087716 Pierre CAMI (colettecami(AT)aol.com), Sep 29 2003
%E A087716 Edited by David Wasserman (dwasserm(AT)earthlink.net), Apr 13 2006