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 A280754 #7 Jan 16 2017 07:56:57 %S A280754 1,2,54,100,130,190,392,486,608,623,799,1448,1614,6169,7807,8149, %T A280754 24403,28945,37665,40395,43559,46117,46259,119663,121149,153317, %U A280754 214459,262759,306637,318605,318815,365029,387471,394597,403431,439125,450051,483511,506807 %N A280754 Numbers n such that A280864(n) = n. %H A280754 Lars Blomberg, <a href="/A280754/b280754.txt">Table of n, a(n) for n = 1..64, based on 10^7 terms of A280864</a> %Y A280754 Cf. A280864. %K A280754 nonn %O A280754 1,2 %A A280754 _N. J. A. Sloane_, Jan 16 2017 %E A280754 More terms from _Lars Blomberg_, Jan 16 2017