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 A175051 #15 May 06 2018 02:25:52
%S A175051 1,4,4,9,9,4,8,9,16,9,9,4,9,9,9,27,16,9,9,9,25,4,9,9,27,9,8,4,27,9,16,
%T A175051 9,9,9,16,9,9,27,9,27,4,9,9,27,27,9,9,4,9,9,9,36,9,9,9,9,16,25,27,16,
%U A175051 27,9,27,4,9,27,27,9,9,9,9,9,9,27,16,9,9,27,9,9,9,9,9,27,9,4,9,9,9,27,64,27
%N A175051 a(n) is the number of divisors of A175050(n).
%C A175051 All terms of this sequence (as well as all of those of sequence A175050) are perfect powers. (I.e., the terms of both of these sequences are terms of sequence A001597.)
%H A175051 Michael De Vlieger, <a href="/A175051/b175051.txt">Table of n, a(n) for n = 1..10000</a>
%t A175051 Block[{nn = 10^5, s}, s = Union@ Flatten@ Table[n^e, {e, Prime@ Range@ PrimePi@ Log2@ nn}, {n, nn^(1/e)}]; Select[DivisorSigma[0, s], MemberQ[s, #] &]] (* _Michael De Vlieger_, Nov 24 2017, after _T. D. Noe_ at A001597 *)
%Y A175051 Cf. A001597, A175050.
%K A175051 nonn
%O A175051 1,2
%A A175051 _Leroy Quet_, Dec 08 2009
%E A175051 Extended by _Ray Chandler_, Dec 10 2009