This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A092643 #10 Mar 18 2018 17:24:58 %S A092643 0,0,1,36,323,2480,20947,183898,1621279,14492365,131016136 %N A092643 Number of consecutive prime runs of 3 primes congruent to 3 mod 4 below 10^n. %F A092643 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 A092643 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 A092643 Cf. A092642, A092644. %K A092643 more,nonn %O A092643 1,4 %A A092643 _Enoch Haga_, Mar 02 2004 %E A092643 a(9)-a(11) from _Chai Wah Wu_, Mar 18 2018