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%I #7 Mar 18 2022 21:53:15
%S 0,1,3,2,4,7,5,8,12,6,10,15,11,16,22,17,23,30,21,28,36,29,37,46,38,47,
%T 57,9,13,18,14,19,25,20,26,33,24,31,39,32,40,49,41,50,60,48,58,69,59,
%U 70,82,71,83,96,27,34,42,35,43,52,44,53,63,51,61,72,62,73,85,74,86,99
%N Inverse permutation to A163328.
%H A. Karttunen, <a href="/A163329/b163329.txt">Table of n, a(n) for n = 0..6560</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%F a(n) = A001477bi(A163325(n),A163326(n)), where A001477bi(x,y) = (((x+y)^2)+x+(3y))/2.
%o (Scheme:) (define (A163329 n) (A001477bi (A163325 n) (A163326 n)))
%o (define (A001477bi x y) (/ (+ (expt (+ x y) 2) x (* 3 y)) 2))
%Y Inverse: A163328. a(n) = A163331(A163327(n)). A054239 is an analogous sequence for binary. Cf. A007089.
%K nonn
%O 0,3
%A _Antti Karttunen_, Jul 29 2009
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