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 A246268 #7 Aug 22 2014 16:50:12 %S A246268 1,2,4,3,7,9,5,16,6,12,18,19,14,11,24,10,29,34,8,38,43,21,26,23,15,52, %T A246268 53,30,27,32,39,56,62,13,66,41,22,69,46,49,73,77,35,20,84,59,48,88,33, %U A246268 98,57,40,100,60,68,106,116,36,64,119,17,93,125,42,72,132,80,140,31,58,145,91,86,74,104,96,151,158,28 %N A246268 Permutation of natural numbers: a(n) = A246264(A064216(2*n)). %C A246268 This permutation is induced when A064216 is restricted to even numbers (equally, when A064989 is restricted to the numbers of form 4n-1) and the resulting numbers are "ranked" with A246264. %H A246268 Antti Karttunen, <a href="/A246268/b246268.txt">Table of n, a(n) for n = 1..10001</a> %H A246268 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A246268 a(n) = A246264(A064216(2*n)). %F A246268 a(n) = A246264(A064989((4*n)-1)). %o A246268 (define (A246268 n) (A246264 (A064216 (+ n n)))) %Y A246268 Inverse: A246267. %Y A246268 Cf. also A064216, A064989, A246264, A246266. %K A246268 nonn %O A246268 1,2 %A A246268 _Antti Karttunen_, Aug 21 2014