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%I #6 Feb 06 2015 02:49:01
%S 1,3,2,4,6,5,7,11,8,16,22,10,9,12,29,37,17,46,56,13,23,67,79,30,92,
%T 106,15,14,18,38,121,137,47,154,172,24,57,191,211,68,232,254,19,31,80,
%U 277,301,93,326,352,39,107,379,407,122,436,466,21,20,25,48,138,497,529,155,562,596,58,173,631,667,192,704,742,32,69,212
%N Inverse permutation to A254107.
%H Antti Karttunen, <a href="/A254108/b254108.txt">Table of n, a(n) for n = 1..8192</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%o (Scheme) (define (A254108 n) (let ((col (A254111 n)) (row (A254112 n))) (* (/ 1 2) (- (expt (+ col row) 2) col row row row -2))))
%Y Inverse: A254107.
%Y Cf. A254106, A254111, A254112.
%K nonn
%O 1,2
%A _Antti Karttunen_, Jan 27 2015
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