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 A184831 #6 Mar 30 2012 17:25:56 %S A184831 0,0,1,1,1,3,1,1,3,2,5,5,3,7,1,5,9,15,3,3,13,3,15,9,1,19,2,1,9,23,1, %T A184831 11,1,11,9,3,33,11,35,21,7,13,41,63,25,5,45,3,49,5,1,3,55,33,1,59,9, %U A184831 63,27,65,11,1,3,75,45,1,79,1,5,41,85,1,1,89,5,39,93,1,57,9 %N A184831 a(n) = A184830(n)/A184829(n) unless A184829(n) = 0 in which case a(n) = 0. %C A184831 a(n) is the "level" of prime powers. %C A184831 The decomposition of prime powers into weight * level + gap is A000961(n) = A184829(n) * a(n) + A057820(n) if a(n) > 0. %C A184831 A184830(n) = A000961(n) - A057820(n) if A000961(n) - A057820(n) > A057820(n), 0 otherwise. %H A184831 Rémi Eismann, <a href="/A184831/b184831.txt">Table of n, a(n) for n = 1..10000</a> %e A184831 For n = 1 we have A184829(1) = 0, hence a(1) = 0. %e A184831 For n = 3 we have A184830(3)/A184829(3)= 2 / 2 = 1; hence a(3) = 1. %e A184831 For n = 24 we have A184830(24)/A184829(24)= 45 / 5 = 9; hence a(24) = 9. %Y A184831 Cf. A000961, A057820, A184829, A184830, A117078, A117563, A001223, A118534. %K A184831 nonn %O A184831 1,6 %A A184831 _Rémi Eismann_, Jan 23 2011