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 A095787 #3 Mar 30 2012 17:27:42 %S A095787 20,30,42,48,54,56,72,80,88,90,96,99,104,108,110,117,120,126,130,132, %T A095787 140,143,150,154,156,160,168,180,182,192,195,204,208,210,216,221,224, %U A095787 228,234,238,240,252,255,264,266,270,272,280,285,288,294,300,304,306 %N A095787 Numbers n such that A095163(n) is different from A033677(n). %C A095787 A095163(n) <= A033677(n). %e A095787 A095163(54) = 6, A033677(54) = 9, so 54 is in the sequence. %e A095787 For n = 12 we have divisors 1, 2, 3, 4, 6, 12; 1 occurs earlier once, 2 occurs earlier twice, 3 occurs earlier 3 times, but 4 occurs earlier only once, hence a(12) = 4. %o A095787 (PARI) {m=310;v=vector(m);for(n=1,m,d=divisors(n);j=1;while(v[d[j]]>=d[j],j++);x=d[j];v[d[j]]=v[d[j]]+1;r=sqrt(n);j=1;while(d[j]<r,j++);y=d[j];if(x!=y,print1(n,",")))} %o A095787 (PARI) {m=80;v=vector(m);for(n=1,m,d=divisors(n);j=1;while(v[d[j]]>=d[j],j++);print1(d[j],",");v[d[j]]=v[d[j]]+1)} %Y A095787 Cf. A095163, A033677. %K A095787 nonn %O A095787 1,1 %A A095787 _Klaus Brockhaus_, Jun 05 2004