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 A278107 #16 Dec 31 2016 01:47:10 %S A278107 1,49,5,21,10,174,27,223,1656,3901,1286,1847,5095,3117,5678,1727, %T A278107 14844,23678,10986,33868,41241,42794,50451,35301,39546,206241,10561, %U A278107 89600,50075,87273,75922,142760,3493,236213,277242,805287,619149,333339 %N A278107 a(n) is the first k such that A277515(k) is the n-th prime. %C A278107 Eggleton et al. show that every prime greater than two occurs in A277515; moreover, each such prime occurs an infinite number of times. %D A278107 R. B. Eggleton, J. S. Kimberley and J. A. MacDougall, Square-free rank of integers, submitted. %H A278107 Robert G. Wilson v and Jason Kimberley, <a href="/A278107/b278107.txt">Table of n, a(n) for n = 2..62</a> %F A278107 A277515(a(n)) = A000040(n). %Y A278107 Cf. A000040, A277515. %K A278107 nonn %O A278107 2,2 %A A278107 _Robert G. Wilson v_, Nov 17 2016, and _Jason Kimberley_, Dec 11 2016