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A092643 Number of consecutive prime runs of 3 primes congruent to 3 mod 4 below 10^n. 4

%I #10 Mar 18 2018 17:24:58

%S 0,0,1,36,323,2480,20947,183898,1621279,14492365,131016136

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

%e a(5)=323 because 323 sets of 3 primes occur below 10^5, each run interrupted by a prime congruent to 1 mod 4.

%Y Cf. A092642, A092644.

%K more,nonn

%O 1,4

%A _Enoch Haga_, Mar 02 2004

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

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Last modified April 17 22:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)