A095787 Numbers n such that A095163(n) is different from A033677(n).
20, 30, 42, 48, 54, 56, 72, 80, 88, 90, 96, 99, 104, 108, 110, 117, 120, 126, 130, 132, 140, 143, 150, 154, 156, 160, 168, 180, 182, 192, 195, 204, 208, 210, 216, 221, 224, 228, 234, 238, 240, 252, 255, 264, 266, 270, 272, 280, 285, 288, 294, 300, 304, 306
Offset: 1
Keywords
Examples
A095163(54) = 6, A033677(54) = 9, so 54 is in the sequence. 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.
Programs
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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] -
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)}
Comments