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 A304098 #10 May 17 2018 17:03:12
%S A304098 1,2,3,2,4,5,4,2,3,6,3,7,8,2,3,6,3,7,4,7,3,6,9,6,10,11,12,13,12,13,12,
%T A304098 13,10,2,3,6,3,7,4,7,3,6,9,6,8,14,3,6,9,6,8,7,8,6,9,15,9,16,12,13,10,
%U A304098 13,10,13,17,5,4,7,4,18,19,18,4,7,8,7,20,21,4,7,8,7,20,18,20,7,8,14,8,22,23,24,17,24,17,2,3,6,3,7,4,7,3,6,9
%N A304098 Restricted growth sequence transform of A046523(A282291(n)).
%C A304098 For all i, j: a(i) = a(j) => A304099(i) = A304099(j).
%H A304098 Antti Karttunen, <a href="/A304098/b304098.txt">Table of n, a(n) for n = 1..60824</a>
%o A304098 (PARI)
%o A304098 \\ Needs also code from A282291:
%o A304098 write_to_bfile(start_offset,vec,bfilename) = { for(n=1, length(vec), write(bfilename, (n+start_offset)-1, " ", vec[n])); }
%o A304098 rgs_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), u=1); for(i=1, length(invec), if(mapisdefined(om,invec[i]), my(pp = mapget(om, invec[i])); outvec[i] = outvec[pp] , mapput(om,invec[i],i); outvec[i] = u; u++ )); outvec; };
%o A304098 A046523(n) = { my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f, (p=nextprime(p+1))^f[i]); }; \\ From A046523
%o A304098 write_to_bfile(1,rgs_transform(vector(60824,n,A046523(A282291(n)))),"b304098.txt");
%Y A304098 Cf. A046523, A282291, A304097, A304099.
%K A304098 nonn,look
%O A304098 1,2
%A A304098 _Antti Karttunen_, May 17 2018