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 A184753 #5 Mar 30 2012 17:25:56 %S A184753 0,0,4,1,13,2,1,10,1,5,16,1,15,16,22,5,37,2,4,2,1,24,11,10,2,28,23,11, %T A184753 41,20,2,3,73,13,76,12,1,20,13,85,34,1,21,2,46,62,5,3,2,2,2,1,2,78,39, %U A184753 80,81,122,3,63,51,32,88,1,1,1,69,70 %N A184753 a(n) = A184752(n)/A130650(n) unless A130650(n) = 0 in which case a(n) = 0. %C A184753 a(n) is the "level" of 3-almost primes. %C A184753 The decomposition of 3-almost primes into weight * level + gap is A014612(n) = A130650(n) * a(n) + A114403(n) if a(n) > 0. %C A184753 a(n) = A014612(n) - A114403(n) if A014612(n) - A114403(n) > A114403(n), 0 otherwise. %H A184753 Rémi Eismann, <a href="/A184753/b184753.txt">Table of n, a(n) for n = 1..10000</a> %e A184753 For n = 1 we have A130650(1) = 0, hence a(1) = 0. %e A184753 For n = 3 we have A184752(3)/A130650(3)= 16 / 4 = 4; hence a(3) = 4. %e A184753 For n = 21 we have A184752(21)/A130650(21)= 97 / 97 = 28; hence a(21) = 1. %Y A184753 Cf. A014612, A114403, A130650, A184752, A117078, A117563, A001223, A118534. %K A184753 nonn %O A184753 1,3 %A A184753 _Rémi Eismann_, Jan 21 2011