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A151947 a(1) = 113; thereafter a(n) = (a(n-1) with digits sorted into descending order) - (a(n-1) with digits sorted into ascending order) (see the Kaprekar map, A151949). 4

%I

%S 113,198,792,693,594,495,495,495,495,495,495,495,495,495,495,495,495,

%T 495,495,495,495,495,495,495,495,495,495,495,495,495,495,495,495,495,

%U 495,495,495,495,495,495,495,495,495,495,495,495,495,495

%N a(1) = 113; thereafter a(n) = (a(n-1) with digits sorted into descending order) - (a(n-1) with digits sorted into ascending order) (see the Kaprekar map, A151949).

%C Converges to the fixed point 495. For the list of fixed points see A099009.

%H <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a>

%Y Cf. A099009, A151946, A151949, A151955.

%K nonn,base

%O 1,1

%A _N. J. A. Sloane_, Aug 18 2009

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Last modified April 20 17:54 EDT 2019. Contains 322310 sequences. (Running on oeis4.)