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 A184834 #5 Mar 30 2012 17:25:56 %S A184834 0,0,0,2,1,1,3,3,6,1,1,5,1,10,7,5,1,14,1,1,16,11,11,18,1,1,20,1,10,15, %T A184834 1,7,17,1,28,19,19,30,1,32,13,13,34,23,23,36,1,38,11,19,27,27,42,17, %U A184834 17,29,1,46,31,31,3,50,1,1,52,35,35,54,1,1,56,1,28,39 %N A184834 a(n) = A184833(n)/A184832(n) unless A184832(n) = 0 in which case a(n) = 0. %C A184834 a(n) is the "level" of squarefree numbers. %C A184834 The decomposition of squarefree numbers into weight * level + gap is A005117(n) = A184832(n) * a(n) + A076259(n) if a(n) > 0. %C A184834 A184833(n) = A005117(n) - A076259(n) if A005117(n) - A076259(n) > A076259(n), 0 otherwise. %H A184834 Rémi Eismann, <a href="/A184834/b184834.txt">Table of n, a(n) for n = 1..10000</a> %e A184834 For n = 1 we have A184832(1) = 0, hence a(1) = 0. %e A184834 For n = 4 we have A184833(4)/A184832(4)= 4 / 2 = 1; hence a(4) = 2. %e A184834 For n = 23 we have A184833(23)/A184832(23)= 33 / 3 = 11; hence a(23) = 11. %Y A184834 Cf. A005117, A076259, A184832, A184833, A117078, A117563, A001223, A118534. %K A184834 nonn %O A184834 1,4 %A A184834 _Rémi Eismann_, Jan 23 2011