A179624 Collatz trajectory starting at 230631.

230631, 691894, 345947, 1037842, 518921, 1556764, 778382, 389191, 1167574, 583787, 1751362, 875681, 2627044, 1313522, 656761, 1970284, 985142, 492571, 1477714, 738857, 2216572, 1108286, 554143, 1662430, 831215, 2493646, 1246823

Offset

1,1

Comments

The total stopping time of 230631 is 442. - Michael De Vlieger, Oct 15 2018

Links

Michael De Vlieger, Table of n, a(n) for n = 1..443

Eric Weisstein's World of Mathematics, Collatz Problem

Wikipedia, Collatz conjecture

Mathematica

Off[Set::"setraw"]; f[n_]:=If[EvenQ[n], n=n/2, n=n*3+1]; Do[a=q; lst={a}; Do[a=f[a]; AppendTo[lst, a]; If[a==1, Break[]], {n, 10!}]; If[Length[lst]>400, Print[lst, Length[lst]]], {q, 5*8!, 9!}]
NestList[If[EvenQ[#], #/2, 3#+1]&, 230631, 30] (* Harvey P. Dale, Jun 26 2011 *)

Crossrefs

Cf. A161021, A179623.

Sequence in context: A324636 A015319 A270515 * A357826 A050998 A237462

Adjacent sequences: A179621 A179622 A179623 * A179625 A179626 A179627

Keyword

nonn,fini,full,easy

Author

Vladimir Joseph Stephan Orlovsky, Jul 20 2010

Status

approved