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 A308049 #13 Jan 09 2021 21:03:51 %S A308049 1,2,4,7,3,8,5,12,14,6,16,9,21,20,10,25,11,27,28,13,33,15,37,34,17,42, %T A308049 18,45,19,41,48,55,22,47,23,58,24,61,54,26,66,29,60,71,30,75,31,78,32, %U A308049 68 %N A308049 Inverse permutation to A308021 (Recamán variant). %C A308049 More precisely, A308021 is by definition injective but presently only conjectured to be a permutation. Until that property is proved, we define this sequence as a(n) = index of the n-th smallest term of A308021. %Y A308049 Cf. A308021. %K A308049 nonn %O A308049 1,2 %A A308049 _M. F. Hasler_, May 10 2019