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 A264976 #10 Dec 06 2015 21:12:57 %S A264976 0,1,2,3,4,5,6,11,32,9,10,29,12,13,14,15,8,23,18,7,20,33,34,95,96,35, %T A264976 104,27,28,83,30,31,86,87,38,113,36,37,110,39,40,41,42,17,50,45,16,47, %U A264976 24,25,68,69,26,77,54,19,56,21,22,59,60,101,302,99,100,299,102,103,284,285,98,293,288,97,290,105,106,311,312,107,320,81 %N A264976 Permutation of nonnegative integers: a(n) = A263272(A264974(n)). %H A264976 Antti Karttunen, <a href="/A264976/b264976.txt">Table of n, a(n) for n = 0..9841</a> %H A264976 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A264976 a(n) = A263272(A264974(n)). %F A264976 a(n) = (1/2) * A263273(A263273(4*n) / 2). %F A264976 Other identities. For all n >= 0: %F A264976 a(3*n) = 3*a(n). %F A264976 A000035(a(n)) = A000035(n). [This permutation preserves the parity of n.] %o A264976 (Scheme, two alternative definitions) %o A264976 (define (A264976 n) (A263272 (A264974 n))) %o A264976 (define (A264976 n) (/ (A263273 (/ (A263273 (* 4 n)) 2)) 2)) %Y A264976 Inverse: A264975 %Y A264976 Cf. A000035, A263272, A263273, A264974. %Y A264976 Cf. also A264991, A264992. %K A264976 nonn %O A264976 0,3 %A A264976 _Antti Karttunen_, Dec 05 2015