A186701 - OEIS

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A186701

Partial sums of Collatz sequence (A008908).

1, 3, 11, 14, 20, 29, 46, 50, 70, 77, 92, 102, 112, 130, 148, 153, 166, 187, 208, 216, 224, 240, 256, 267, 291, 302, 414, 433, 452, 471, 578, 584, 611, 625, 639, 661, 683, 705, 740, 749, 859, 868, 898, 915, 932, 949, 1054, 1066, 1091, 1116, 1141, 1153

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

MATHEMATICA

Accumulate[Table[Length[NestWhileList[If[EvenQ[#], #/2, 3#+1]&, n, #!=1&]], {n, 100}]]

CROSSREFS

Cf. A008908.

Sequence in context: A115214 A373955 A143029 * A022123 A303035 A273869

Adjacent sequences: A186698 A186699 A186700 * A186702 A186703 A186704

KEYWORD

nonn

AUTHOR

Harvey P. Dale, Feb 25 2011

STATUS

approved