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A082124 Smallest difference>1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 9. 1

%I

%S 9,8,6,6,6,36,39,618,4932,60192,3075084,349550100,15219084556800,

%T 13331385308976969710

%N Smallest difference>1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 9.

%o (PARI) 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]))

%Y Cf. A082120, A082123, A003681 (starts with 2, 3), A082125.

%K nonn,hard,more

%O 1,1

%A _Ralf Stephan_, Apr 04 2003

%E a(14) from Herman Jamke (hermanjamke(AT)fastmail.fm), Nov 02 2006

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Last modified August 24 14:13 EDT 2019. Contains 326283 sequences. (Running on oeis4.)