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 A266644 #8 Jan 09 2016 16:08:10 %S A266644 0,1,2,3,4,7,6,5,8,9,10,13,12,19,22,21,16,35,18,11,20,15,14,27,24,17, %T A266644 38,23,28,55,30,41,64,71,54,73,36,31,78,29,40,49,66,67,52,63,34,79,48, %U A266644 43,50,45,76,61,46,39,56,33,26,65,60,59,82,75,32,47,42,37,68,81,70,77,72,25,62,51,44,57,58,83,80,69 %N A266644 Permutation of nonnegative integers: a(n) = A264966(3*n) / 3. %H A266644 Antti Karttunen, <a href="/A266644/b266644.txt">Table of n, a(n) for n = 0..19682</a> %H A266644 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A266644 a(n) = A264966(3*n) / 3. %F A266644 As a composition of related permutations: %F A266644 a(n) = A246200(A263273(n)). %o A266644 (Scheme) (define (A266644 n) (/ (A264966 (* 3 n)) 3)) %Y A266644 Inverse: A266643. %Y A266644 Cf. A246200, A263273, A264966, A265329, A265369, A266635, A266636, A266641, A266642. %Y A266644 Differs from A264965 for the first time at n=17, where a(17) = 35, while A264965(17) = 25. %K A266644 nonn,base %O A266644 0,3 %A A266644 _Antti Karttunen_, Jan 04 2016