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 A178800 #11 Dec 17 2013 23:02:17
%S A178800 41624,177624,336500,515096,625975,686375,767124,789399,816776,829575,
%T A178800 985959,1035800,1059624,1173500,1184183,1276856,1340199,1365875,
%U A178800 1369575,1614500,1784871,1790199,1890567,2078199,2175875,2219624,2364200,2379351,2540600
%N A178800 Smaller of two consecutive numbers with prime signature {1,2,3}.
%C A178800 The numbers in this sequence are described by both A052213 (consecutive numbers with the same prime signature) and A163569 (numbers with prime signature {1,2,3}).
%H A178800 Donovan Johnson, <a href="/A178800/b178800.txt">Table of n, a(n) for n = 1..1000</a>
%o A178800 (PARI) e=vector(3); for(n=360, 2540600, if(omega(n)==3, if(bigomega(n)==6, if(omega(n+1)==3, if(bigomega(n+1)==6, for(m=n, n+1, f=factorint(m); for(j=1, 3, e[j]=f[j,2]); e=vecsort(e); for(j=1, 3, if(e[j]<>j, next(3)))); print1(n ", ")))))) \\ _Donovan Johnson_, Dec 17 2013
%Y A178800 Cf. A163569, A052213.
%K A178800 nonn
%O A178800 1,1
%A A178800 _Will Nicholes_, Jun 15 2010
%E A178800 Extended by _Ray Chandler_, Jul 30 2010