A165015 (Length of preperiodic part) + (length of cycle) of trajectory of n under iteration of the base-4 Kaprekar map in A165012.

1, 2, 2, 2, 3, 2, 3, 4, 4, 3, 2, 3, 4, 4, 3, 2, 3, 3, 2, 3, 3, 2, 3, 2, 2, 3, 3, 2, 3, 2, 1, 2, 2, 2, 2, 3, 2, 3, 3, 2, 2, 3, 2, 3, 3, 2, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 3, 2, 3, 3, 3, 2, 3, 2, 3, 3, 3, 2, 3, 3, 3, 4, 3, 3, 3, 2, 2, 4, 2, 4, 3, 3, 3, 4, 3, 2, 3, 3, 3, 3, 3, 3, 4, 3, 3, 4, 3, 3, 3, 2, 3, 3, 3, 3, 3

Offset

0,2

Links

Joseph Myers, Table of n, a(n) for n = 0..1024

Index entries for the Kaprekar map

Crossrefs

Cf. A165012, A165014.

In other bases: A164886 (base 2), A164996 (base 3), A165035 (base 5), A165054 (base 6), A165074 (base 7), A165093 (base 8), A165113 (base 9), A151963 (base 10).

Sequence in context: A068324 A167505 A360998 * A178994 A306608 A143976

Adjacent sequences: A165012 A165013 A165014 * A165016 A165017 A165018

Keyword

base,nonn

Author

Joseph Myers, Sep 04 2009

Status

approved