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 A154446 #6 Mar 31 2012 13:21:17 %S A154446 0,1,3,2,6,7,4,5,12,13,14,15,9,8,10,11,24,25,26,27,28,29,30,31,18,19, %T A154446 16,17,20,21,22,23,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,36, %U A154446 37,38,39,33,32,34,35,40,41,42,43,44,45,46,47,96,97,98,99,100,101,102 %N A154446 Permutation of nonnegative integers: The inverse of A154445. %H A154446 A. Karttunen, <a href="/A154446/b154446.txt">Table of n, a(n) for n = 0..2047</a> %H A154446 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A154446 Inverse: A154445. a(n) = A153142(A154440(n)) = A054429(A154442(A054429(n))). Cf. A072376, A153141-A153142, A154435-A154436, A154439-A154448. Corresponds to A154456 in the group of Catalan bijections. %K A154446 nonn,base %O A154446 0,3 %A A154446 _Antti Karttunen_, Jan 17 2009 %E A154446 Spelling/notation corrections by _Charles R Greathouse IV_, Mar 18 2010