%I #8 Dec 13 2015 07:48:42
%S 0,1,3,2,4,5,11,7,12,19,15,6,8,18,14,10,16,17,13,9,20,21,43,27,44,75,
%T 59,23,28,71,55,39,48,67,51,35,76,83,47,31,60,79,63,22,24,70,54,38,32,
%U 66,50,34,72,82,46,30,56,78,62,26,40,74,58,42,64,65,49,33,68,81,45,29,52,77,61,25,36,73,57,41,80,69
%N Self-inverse permutation of nonnegative integers: a(n) = A264994(3*n)/3.
%H Antti Karttunen, <a href="/A264993/b264993.txt">Table of n, a(n) for n = 0..21845</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%o (Scheme) (define (A264993 n) (/ (A264994 (* 3 n)) 3))
%Y Cf. A264994.
%Y Cf. also A246200, A265335.
%K nonn,base
%O 0,3
%A _Antti Karttunen_, Dec 07 2015