%I A054273
%S A054273 2,6,10,19,23,29,25,38,42,35,56,54,45,60,67,84,66,76,94,98,95,92,108,
%T A054273 108,107,129,127,128,127,152,160,152,145,173,153,156,183,214,208,212,
%U A054273 201,220,220,219,222,248,255,241,252,265,265,252,280,276,291,292
%N A054273 Number of primes p in the interval prime(n+1) <= p < prime(n+1)^2 such 
               that A002110(n)+p is prime.
%e A054273 n=3, prime(4)=7, prime(4)^2=49; 3rd primorial number = 30; in interval 
               [7,49] 12 primes p occur of which 10 are such that 30+p is prime, 
               namely 30+{7,11,13,17,23,29,31,37,41,43} = {37,41,...,73}, "post-primorial 
               primes", while two primes 19 and 47 yield 49, 77 which are composites. 
               So a(3)=10.
%Y A054273 Cf. A000879, A001248, A000040, A005235, A002110.
%Y A054273 Sequence in context: A095358 A084481 A006553 this_sequence A127567 A005993 
               A028247
%Y A054273 Adjacent sequences: A054270 A054271 A054272 this_sequence A054274 A054275 
               A054276
%K A054273 nonn
%O A054273 1,1
%A A054273 Labos E. (labos(AT)ana.sote.hu), May 05 2000