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A161021
Collatz (or 3x+1) trajectory starting at 703.
8
703, 2110, 1055, 3166, 1583, 4750, 2375, 7126, 3563, 10690, 5345, 16036, 8018, 4009, 12028, 6014, 3007, 9022, 4511, 13534, 6767, 20302, 10151, 30454, 15227, 45682, 22841, 68524, 34262, 17131, 51394, 25697, 77092, 38546, 19273, 57820, 28910
OFFSET
0,1
COMMENTS
703 = A060412(5); a(A006577(703)) = a(170) = 1;
a(n) = A008884(n-59) for n with 162 <= n <= 170;
a(n) = A161022(n+53) for n with 155 <= n <= 170;
a(n) = A161023(n+153) for n with 144 <= n <= 170.
MATHEMATICA
NestList[If[EvenQ[#], #/2, 3#+1]&, 703, 40] (* Harvey P. Dale, Nov 27 2011 *)
CROSSREFS
Sequence in context: A045146 A083735 A375918 * A283521 A334010 A257721
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, Jun 03 2009
EXTENSIONS
Edited by N. J. A. Sloane, Jul 27 2019
STATUS
approved