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 A091606 #7 Nov 25 2021 11:23:43 %S A091606 1,0,1,2,3,3,6,7,11,14,20,25,35,43,58,73,95,118,152,187,237,291,363, %T A091606 443,549,665,815,985,1197,1437,1737,2075,2491,2966,3539,4195,4984, %U A091606 5882,6955,8183,9633,11291,13246,15474,18085,21066,24536,28495,33092,38321 %N A091606 Column 3 of triangle A091602. %H A091606 Alois P. Heinz, <a href="/A091606/b091606.txt">Table of n, a(n) for n = 3..1000</a> %F A091606 a(n) = A001935(n) - A000726(n). %Y A091606 Cf. A000726, A001935, A091602. %K A091606 nonn %O A091606 3,4 %A A091606 _Christian G. Bower_, Jan 23 2004