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 A175115 #12 Jul 17 2019 09:33:18 %S A175115 3,24,120,150,195,216,294,312,399,440,459,525,540,558,570,615,630,663, %T A175115 693,696,744,759,774,858,999,1032,1095,1125,1152,1176,1239,1350,1455, %U A175115 1470,1494,1608,1624,1659,1664,1710,1725,1734,1785,1860,1880,1896,1914 %N A175115 An integer k, k >=3, is included if d(k) = d(k-1)*d(k-2), where d(k) is the number of divisors of k. %C A175115 Terms calculated by _M. F. Hasler_. %H A175115 Amiram Eldar, <a href="/A175115/b175115.txt">Table of n, a(n) for n = 1..10000</a> %t A175115 Transpose[Select[Partition[Range[2000], 3, 1], DivisorSigma[0, Last[#]] == DivisorSigma[0, First[#]] * DivisorSigma[0, #[[2]]]&]][[1]] + 2 (* _Amiram Eldar_, Jul 17 2019 after _Harvey P. Dale_ at A175116 *) %Y A175115 Cf. A000005, A175116, A145469. %K A175115 nonn %O A175115 1,1 %A A175115 _Leroy Quet_, Feb 13 2010