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 A088870 #4 Jun 08 2025 16:15:42 %S A088870 13677,14647,21291,29567,43941,69031,88701,105991,126507,317973, %T A088870 156304482823,468913448469,21729950852487,2212933498428421, %U A088870 6638800495285263,12049739358792173,36149218076376519,11316117499289108644863 %N A088870 Numbers n which are divisors of the number produced by concatenating (n-5), (n-4), ... (n-1) in that order. %e A088870 a(1)=13677 because 13677 is a factor of 1367213673136741367513676. %Y A088870 Cf. A069860, A088797, A088798, A088799, A088800, A088868, A088869, A088871, A088872. %K A088870 base,nonn %O A088870 1,1 %A A088870 _Chuck Seggelin_, Oct 20 2003 %E A088870 More terms from _David Wasserman_, Aug 26 2005