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 A082122 #10 Mar 11 2015 07:26:48 %S A082122 11,10,17,21,23,31,43,167,6383,31741,52112213,37549127743, %T A082122 36777947021270771,504837176634758950812127 %N A082122 Smallest difference > 1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 11. %o A082122 (PARI) 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])) %Y A082122 Cf. A082120, A003681 (starts with 2, 3), A082123. %K A082122 nonn,hard %O A082122 0,1 %A A082122 _Ralf Stephan_, Apr 04 2003