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 A344848 #18 Sep 15 2021 08:46:42
%S A344848 1,2,3,4,5,45,47,48,63,70,139,163,191,194,206,242,310,422,457,668,983,
%T A344848 1018,1022,1087,1089,1194,1251,1312,1460,1692,1757,1795,1863,1907,
%U A344848 1956,2048,2158,2169,2175,2193,2285,2406,2439,2513,2626,2645,2697,2726,2738,2788
%N A344848 Fixed points of A219360.
%C A344848 Data are obtained by parsing the b-file of A219360, assuming that this is correct up to the maximum index shown here (so no further backtracking steps need to be inserted there at higher indices). - _R. J. Mathar_, Sep 15 2021
%F A344848 {k: k=A219360(k)}.
%Y A344848 Cf. A219360.
%K A344848 nonn
%O A344848 1,2
%A A344848 _Amarnath Murthy_, May 30 2021