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 A324334 #6 Feb 23 2019 07:26:07 %S A324334 3,5,7,8,9,10,13,15,17,19,23,26,28,31,33,37,40,46,48,49,55,61,62,63, %T A324334 65,78,80,82,96,99,118,122,126,127,129,142,144,145,148,157,159,163, %U A324334 166,172,176,179,185,226,228,230,240,242,244,246,249,255,257,258,288,296,303,320,321,328,342,354,357,358,360 %N A324334 Numbers d such that A324331(x)=d^2 not only for squarefree semiprimes x (A006881) but also for x in A324333. %H A324334 B. Alspach, <a href="https://doi.org/10.1016/0012-365X(82)90195-9">Research problems, Problem 18</a>, Discrete Math 40 (1982), page 126. %e A324334 A324331(45) = 64, a square, even though 45 is not squarefree semiprime, so 8 is a term, and 45 is in A324332. %Y A324334 Cf. A000010, A000203, A006881. %Y A324334 Cf. A324331, A324332, A324333 (complement). %K A324334 nonn %O A324334 1,1 %A A324334 _Michel Marcus_, Feb 23 2019