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Number of consecutive prime runs of 7 primes congruent to 3 mod 4 below 10^n.
2

%I #10 Mar 18 2018 17:30:15

%S 0,0,1,1,6,56,575,5427,52548,506986,4857159

%N Number of consecutive prime runs of 7 primes congruent to 3 mod 4 below 10^n.

%F Generate the prime sequence with primes labeled 1 mod 4 or 3 mod 4. Add count of primes to sequence if just 7 primes occur before interruption by a prime congruent to 1 mod 4.

%e a(5)=6 because 6 sets of 7 primes occur below 10^5, each run interrupted by a prime congruent to 1 mod 4.

%Y Cf. A092654, A092656.

%K more,nonn

%O 1,5

%A _Enoch Haga_, Mar 02 2004

%E a(9)-a(11) from _Chai Wah Wu_, Mar 18 2018