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).

113, 198, 792, 693, 594, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495, 495

Offset

1,1

Comments

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

Links

Table of n, a(n) for n=1..48.

Index entries for the Kaprekar map

Crossrefs

Cf. A099009, A151946, A151949, A151955.

Sequence in context: A142180 A325084 A084951 * A087703 A056710 A124585

Adjacent sequences: A151944 A151945 A151946 * A151948 A151949 A151950

Keyword

nonn,base

Author

N. J. A. Sloane, Aug 18 2009

Status

approved