%I #5 Feb 18 2018 19:53:02

%S 1,2,3,4,5,6,7,8,9,10,11,13,14,16,12,17,18,15,21,20,19,23,24,22,27,26,

%T 25,29,30,28,32,34,33,35,36,37,38,40,41,31,43,42,45,47,48,49,50,39,52,

%U 54,55,44,57,56,59,46,60,61,62,51,64,66,67,53,69,68,72

%N Inverse permutation to A299441.

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%e A299441(19) = 21, hence a(21) = 19.

%Y Cf. A299441.

%K nonn

%O 1,2

%A _Rémy Sigrist_, Feb 17 2018