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A183212 Second of two trees generated by floor[(3n-1)/2]. 4
2, 6, 8, 18, 11, 24, 26, 54, 16, 33, 35, 72, 38, 78, 80, 162, 23, 48, 49, 99, 52, 105, 107, 216, 56, 114, 116, 234, 119, 240, 242, 486, 34, 69, 71, 144, 73, 147, 148, 297, 77, 156, 157, 315, 160, 321, 323, 648, 83, 168, 170, 342 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See the comments at A183211, which is the mate for this tree.
LINKS
EXAMPLE
First four levels of the tree:
.......................2
.......................6
.............8...................18
...........11..24.............26....54
MATHEMATICA
a = {2, 6}; row = {a[[-1]]}; Do[a = Join[a, row = Flatten[{Quotient[3 # - 1, 2], 3 #} & /@ row]], {n, 5}]; a (* Ivan Neretin, May 25 2015 *)
CROSSREFS
Cf. A183211.
Sequence in context: A137848 A182629 A331972 * A360264 A325686 A053355
KEYWORD
nonn,tabf
AUTHOR
Clark Kimberling, Dec 30 2010
STATUS
approved

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Last modified April 20 03:59 EDT 2024. Contains 371798 sequences. (Running on oeis4.)