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 A165770 #11 Dec 23 2024 14:53:42 %S A165770 1,2,3,617,823,1286,9721,14593,32463,1234567891,1417414341,2110805449, %T A165770 98220894641,205761315168520219,8230452606740808761, %U A165770 3086419727527803285379,8755800645468945490437,70708355728013820970883 %N A165770 Smallest divisor of 123...n (=A007908) larger than the preceding term. %C A165770 Inspired by Layman's comment on a sequence from Angelini, cf. link. %H A165770 John W. Layman, <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2009-September/002434.html">Re: Sum divides concatenation</a>, SeqFan list, Sep 30 2009. %o A165770 (PARI) c=""; s=0; for(i=1,19, fordiv(c=eval(Str(c,i)),d, d>s || next; print1(s=d,", "); break)) %Y A165770 Cf. A151995. %K A165770 nonn,base %O A165770 1,2 %A A165770 _M. F. Hasler_, Sep 30 2009 %E A165770 Edited by _Charles R Greathouse IV_, Apr 24 2010