Search: id:A091318
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%I A091318
%S A091318 1,2,1,2,1,1,1,3,2,1,1,1,1,1,2,2,1,1,1,2,1,2,1,2,1,4,1,1,3,2,1,1,1,1,1,
%T A091318 1,2,1,1,3,2,1,4,2,1,1,2,2,3,1,1,3,1,1,1,1,1,2,2,1,1,1,4,1,2,1,1,2,1,1,
%U A091318 2,1,2,1,1,2,2,2,2,1,2,3,2,2,1,1,2,1,2,2,1,2,1,2,1,1,1,2,1,2,2,2,3,3,3
%N A091318 Lengths of runs of 1's in A039702.
%C A091318 Number of primes congruent to 1 mod 4 in sequence before interruption 
               by a prime 3 mod 4.
%D A091318 Enoch Haga, Exploring prime numbers on your PC and the Internet with 
               directions to prime number sites on the Internet, 2001, pages 30-31. 
               ISBN 1-885794-17-7.
%F A091318 Count primes congruent to 1 mod 4 in sequence before interruption by 
               a prime divided by 4 with remainder 3.
%e A091318 a(8)=3 because this is the sequence of primes congruent to 1 mod 4: 89, 
               97, 101. The next prime is 103, a prime 3 mod 4.
%Y A091318 Cf. A002144, A002145, A039702, A091267, A091237.
%Y A091318 Sequence in context: A175024 A175023 A128115 this_sequence A003639 A061916 
               A076348
%Y A091318 Adjacent sequences: A091315 A091316 A091317 this_sequence A091319 A091320 
               A091321
%K A091318 easy,nonn
%O A091318 1,2
%A A091318 Enoch Haga (Enokh(AT)comcast.net), Feb 22 2004

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