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%I #10 Nov 10 2012 20:47:47
%S 0,1,2,4,3,7,6,5,12,11,10,9,8,21,20,19,18,17,16,15,14,13,38,37,36,35,
%T 34,33,32,31,30,29,28,27,26,25,24,23,22,68,67,66,65,64,63,62,61,60,59,
%U 58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39
%N Simple self-inverse permutation of natural numbers: after zero, list each block of A213709(n) numbers in reverse order, from A218600(n) to A213710(n-1).
%C This permutation can be used to map between the sequences A179016 and A218616. E.g. A179016(n) = A218616(a(n)) and vice versa: A218616(n) = A179016(a(n)).
%H Antti Karttunen, <a href="/A218602/b218602.txt">Table of n, a(n) for n = 0..8727</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%F a(n) = A218600(A213711(n))-A218601(n).
%o (Scheme): (define (A218602 n) (- (A218600 (A213711 n)) (A218601 n)))
%Y Cf. A179016, A218616, A054429, A130918, A054430.
%K nonn
%O 0,3
%A _Antti Karttunen_, Nov 10 2012
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