A082122
Smallest difference > 1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 11.
Original entry on oeis.org
11, 10, 17, 21, 23, 31, 43, 167, 6383, 31741, 52112213, 37549127743, 36777947021270771, 504837176634758950812127
Offset: 0
-
p=11; print1(p, ", "); for(n=1, 50, v=divisors(p); r=sqrt(p); t=0; for(k=1, matsize(v)[2], if(v[k]>=r, t=k; break)); if(v[t]^2==p, u=t, u=t-1); if(v[t]-v[u]<2, u=u-1; t=t+1); print1(v[t]-v[u]", "); p=p*(v[t]-v[u]))
A082124
Smallest difference>1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 9.
Original entry on oeis.org
9, 8, 6, 6, 6, 36, 39, 618, 4932, 60192, 3075084, 349550100, 15219084556800, 13331385308976969710
Offset: 1
-
p=9; print1(p, ", "); for(n=1, 50, v=divisors(p); r=sqrt(p); t=0; for(k=1, matsize(v)[2], if(v[k]>=r, t=k; break)); if(v[t]^2==p, u=t, u=t-1); if(v[t]-v[u]<2, u=u-1; t=t+1); print1(v[t]-v[u]", "); p=p*(v[t]-v[u]))
a(14) from Herman Jamke (hermanjamke(AT)fastmail.fm), Nov 02 2006
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