%I

%S 2,1,7,3,29,30,31,4,8,9,10,5,121,122,123,6,16,11,32,33,34,35,36,12,17,

%T 13,497,498,499,500,501,14,18,15,67,37,46,38,124,19,20,125,126,127,

%U 128,129,130,21,47,39,68,40,48,41,2017,22,2018,2019,2020,2021,2022,2023

%N Inverse permutation to sequence A113820.

%e A113820(29) = 5, so a(5) = 29.

%Y Cf. A113820.

%K nonn

%O 1,1

%A _Klaus Brockhaus_, Jan 27 2006