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A004166 Sum of digits of 3^n. 8
1, 3, 9, 9, 9, 9, 18, 18, 18, 27, 27, 27, 18, 27, 45, 36, 27, 27, 45, 36, 45, 27, 45, 54, 54, 63, 63, 81, 72, 72, 63, 81, 63, 72, 99, 81, 81, 90, 90, 81, 90, 99, 90, 108, 90, 99, 108, 126, 117, 108, 144, 117, 117, 135, 108, 90, 90, 108, 126, 117, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..60.

Albert Frank, International Contest Of Logical Sequences, 2002 - 2003. Item 3

Albert Frank, Solutions of International Contest Of Logical Sequences, 2002 - 2003.

MATHEMATICA

Total[IntegerDigits[#]]&/@(3^Range[0, 60]) (* Harvey P. Dale, Mar 03 2013 *)

CROSSREFS

Cf. A067500, A118872, A175435.

Sequence in context: A201409 A111120 A100401 * A110759 A063750 A143225

Adjacent sequences:  A004163 A004164 A004165 * A004167 A004168 A004169

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 24 20:01 EDT 2013. Contains 225630 sequences.