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

Author

N. J. A. Sloane, Aug 18 2009

Keywords

• nonn
• base

Comments

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

Links

• Index entries for the Kaprekar map

Crossrefs

Cf. A099009, A151946, A151949, A151955.