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Inverse of A137621.
1

%I #5 Mar 30 2012 18:50:59

%S 1,2,4,3,8,5,11,6,7,9,18,10,22,12,13,14,29,15,33,16,17,19,40,20,21,23,

%T 24,25,51,26,54,27,28,30,31,32,64,34,35,36,72,37,76,38,39,41,84,42,43,

%U 44,45,46,94,47,48,49,50,52,104,53,109,55,56,57,58,59,120,60,61,62,127

%N Inverse of A137621.

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

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Jan 30 2008