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 A093399 #8 Sep 19 2024 04:39:35 %S A093399 0,1,5,4,34,116,130,241,2187,3076,9683,33067,133346 %N A093399 Absolute value of difference between counts of uninterrupted runs of 3 nonprimes in A093187 and A093188. %F A093399 Take the absolute value of differences between counts of runs of 3 odd nonprimes congruent to 1 mod 4 and 3 mod 4 %F A093399 a(n) = abs(A093187(n) - A093188(n)) %e A093399 a(3)=5 because in A093187 the count is 10 and in A093188 the count is 5. 10-5=5. %Y A093399 Cf. A093187 A093188 A092642 A092643 A092644. %K A093399 more,nonn,hard %O A093399 1,3 %A A093399 _Enoch Haga_, Mar 30 2004 %E A093399 a(9)-a(13) from _Lucas A. Brown_, Sep 19 2024