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Number of consecutive prime runs of 6 primes congruent to 1 mod 4 below 10^n.
2

%I #10 Mar 18 2018 17:43:23

%S 0,0,0,0,9,127,1417,13519,126480,1191992,11227315

%N Number of consecutive prime runs of 6 primes congruent to 1 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 6 primes occur before interruption by a prime congruent to 3 mod 4.

%e a(5)=9 because 9 sets of 6 primes occur below 10^5, each run interrupted by a prime congruent to 3 mod 4.

%Y Cf. A092652, A092653.

%K more,nonn

%O 1,5

%A _Enoch Haga_, Mar 02 2004

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