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A117592 a(n)=a(3n)=a(3n+1)=a(3n+2)/2. 2
1, 1, 2, 1, 1, 2, 2, 2, 4, 1, 1, 2, 1, 1, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 8, 1, 1, 2, 1, 1, 2, 2, 2, 4, 1, 1, 2, 1, 1, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 8, 2, 2, 4, 2, 2, 4, 4, 4, 8, 2, 2, 4, 2, 2, 4, 4, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

a(n)=a(3n)/a(0)=a(3n+1)/a(1)=a(3n+2)/a(2). Row sums of number triangle A117944. A117943 mod 2=A039966 A117942 is a signed version of A117943.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..2000

MATHEMATICA

Nest[ Join[#, #, 2#] &, {1}, 5] (* Robert G. Wilson v, Jul 27 2014 *)

CROSSREFS

Sequence in context: A133098 A145788 A323861 * A117942 A290092 A066877

Adjacent sequences:  A117589 A117590 A117591 * A117593 A117594 A117595

KEYWORD

nonn

AUTHOR

Paul Barry, Apr 05 2006

STATUS

approved

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Last modified April 10 00:05 EDT 2020. Contains 333392 sequences. (Running on oeis4.)