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 A071563 #9 Jul 26 2024 05:27:23 %S A071563 3,10,21,73,145,426,533,652,1335,2669,2929,6513,6917,8401,8859,10012, %T A071563 25351,27281,27281,87054,113051,122851,122851,122851,122851,178569, %U A071563 178569,185506,185506,599206,599206,599206,1308163,1888133,1888133,1888133,1888133,1888133 %N A071563 Least k such that there are no middle divisors of k (A071090) through k+n. %e A071563 a(3) = 73 because 73, 74, 75 & 76 are present in A071562. %Y A071563 Cf. A071090, A071561, A071562. %K A071563 nonn %O A071563 0,1 %A A071563 _Robert G. Wilson v_, May 30 2002 %E A071563 a(18) inserted and more terms from _Sean A. Irvine_, Jul 26 2024