A045475 Normalized extreme values for "3x+1" trees of depth n.

1, 1, 1, 2, 2, 3, 4, 5, 6, 9, 11, 16, 20, 27, 36, 48, 64, 87, 114, 154, 206, 274, 363, 484, 649, 868, 1159, 1549, 2052, 2747

Offset

1,4

Links

Table of n, a(n) for n=1..30.

D. Applegate and J. C. Lagarias, Distribution of 3x+1 trees, Experimental Mathematics 4 (1995), 193-209.

J. C. Lagarias, The 3x+1 problem and its generalizations, Amer. Math. Monthly, 92 (1985), 3-23.

Index entries for sequences related to 3x+1 (or Collatz) problem

Crossrefs

Cf. A045474, A045476.

Sequence in context: A238625 A274145 A036072 * A316078 A082543 A050322

Adjacent sequences: A045472 A045473 A045474 * A045476 A045477 A045478

Keyword

nonn,more

Author

N. J. A. Sloane

Status

approved