A081883 Numbers n such that the number of steps needed to reach an integer starting with n-1/4 or n+1/4 and iterating the map x-->x*ceiling(x) is the same.

5, 9, 21, 37, 46, 49, 53, 69, 85, 101, 113, 117, 121, 133, 137, 149, 165, 174, 177, 181, 197, 213, 217, 229, 241, 245, 261, 265, 277, 293, 302, 305, 309, 313, 325, 341, 357, 369, 373, 389, 393, 405, 421, 430, 433, 437, 441, 453, 469, 485, 497, 501, 517, 521

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Crossrefs

Cf. A068119.

Sequence in context: A297360 A216414 A147018 * A049744 A000323 A146131

Adjacent sequences: A081880 A081881 A081882 * A081884 A081885 A081886

Keyword

nonn

Author

Benoit Cloitre, Apr 13 2003

Status

approved