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 A270421 #6 May 27 2016 21:12:27 %S A270421 8,27,32,54,64,96,125,160,192,216,224,243,250,343,375,486,500,512,686, %T A270421 729,864,972,1000,1024,1029,1080,1215,1331,1372,1458,1536,1701,1715, %U A270421 1728,1944,2058,2197,2430,2560,2662,2673,2744,2916,3000,3072,3125,3159,3375,3402,3584,3645,3888,3993,4000,4096,4131,4320,4394 %N A270421 Numbers n for which A270418(n) < A270419(n). %H A270421 Antti Karttunen, <a href="/A270421/b270421.txt">Table of n, a(n) for n = 1..720</a> %o A270421 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A270421 (define A270421 (MATCHING-POS 1 1 (lambda (n) (< (A270418 n) (A270419 n))))) %Y A270421 Complement: A270420 (apart from 1 which is in neither sequence). %Y A270421 Cf. A262675 (a subsequence after initial 1). %Y A270421 Cf. A270418, A270419. %K A270421 nonn %O A270421 1,1 %A A270421 _Antti Karttunen_, May 23 2016