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 A151995 #10 Mar 20 2015 18:17:22 %S A151995 1,2,6,250488,19986,118030,133970,693810,2231328,3407286,5733260, %T A151995 25176334,75529002,1913932644,2692452,5413116264,6766395330, %U A151995 2492882490,9544178676,19819882608,10086515692,10541120510,4147755864,6025730266 %N A151995 a(1)=1; thereafter a(n) is smallest positive number not already in the sequence such that the sum a(1)+...+a(n) divides the concatenation a(1)...a(n). %e A151995 1+2 (=3) divides 12 --> HIT %e A151995 1+2+3 (=6) does not divide 123 %e A151995 1+2+4 (=7) does not divide 124 %e A151995 1+2+5 (=8) does not divide 125 %e A151995 1+2+6 (=9) divides 126 --> HIT %e A151995 ... %e A151995 126250488 == (1+2+6+250488) * 504 %e A151995 ... %e A151995 The sum of the first 14 terms, 2027226147, divides their concatenation %e A151995 1262504881998611803013397069381022313283407286573326025176334755290021913932644, %e A151995 giving a quotient of %e A151995 622774565071062988323520804204101612390759720490782533881916606559052. %Y A151995 Cf. A152210, A166064, A165770, A165771. %K A151995 nonn,base %O A151995 1,2 %A A151995 _N. J. A. Sloane_, Oct 07 2009, based on a posting to the Sequence Fans Mailing List by _Eric Angelini_, Sep 29 2009 %E A151995 More terms from _Jack Brennen_, _John W. Layman_, _Charles R Greathouse IV_ and _Robert G. Wilson v_, Sep 30 2009. _Jack Brennen_ found a(14). %E A151995 Definition corrected by _Zak Seidov_, Oct 08 2009 %E A151995 a(15)-a(24) from _Donovan Johnson_, Jul 20 2010