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 A093397 #8 May 30 2019 14:04:55 %S A093397 0,1,2,6,9,31,88,205,1636,2884,4569,30270,14874 %N A093397 Absolute value of difference between counts of uninterrupted runs of single nonprimes in A093183 and A093184. %F A093397 Take the absolute value of differences between counts of runs of single nonprimes congruent to 1 mod 4 and 3 mod 4 %e A093397 a(3)=2 because in A093183 the count is 74 and in A093184 the count is 76. 76-74=2. %Y A093397 Cf. A093183 A093184 A092636 A092637 A092638. %K A093397 nonn,more %O A093397 1,3 %A A093397 _Enoch Haga_, Mar 30 2004 %E A093397 a(9)-a(13) from _Robert Price_, May 30 2019