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A151920 (Sum_{i=1..n+1} 3^wt(i))/3, where wt() = A000120(). 9
1, 2, 5, 6, 9, 12, 21, 22, 25, 28, 37, 40, 49, 58, 85, 86, 89, 92, 101, 104, 113, 122, 149, 152, 161, 170, 197, 206, 233, 260, 341, 342, 345, 348, 357, 360, 369, 378, 405, 408, 417, 426, 453, 462, 489, 516, 597, 600, 609, 618, 645, 654, 681, 708, 789, 798, 825, 852, 933, 960 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Partial sums of A147610 (but with offset changed to 0).

LINKS

Table of n, a(n) for n=0..59.

Index entries for sequences related to cellular automata

FORMULA

a(n) = (A147562(n+2) - 1)/4 = (A151917(n+2) - 1)/2. - Omar E. Pol, Mar 13 2011

EXAMPLE

n=3: (3^1+3^1+3^2+3^1)/3 = 18/3 = 6.

CROSSREFS

Cf. A130665, A147562, A147610, A153000, A160410, A160414. [From Omar E. Pol, Nov 12 2009]

Cf. A139250, A151917, A152998. - Omar E. Pol, Mar 13 2011

Sequence in context: A046962 A022486 A161910 * A160714 A219764 A094350

Adjacent sequences:  A151917 A151918 A151919 * A151921 A151922 A151923

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Aug 05 2009, Aug 06 2009

STATUS

approved

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Last modified December 22 02:01 EST 2014. Contains 252326 sequences.