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A004667 Powers of 3 written in base 13. (Next term contains a non-decimal character). 0
1, 3, 9, 21, 63, 159, 441 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A060578 A147078 A146416 * A073947 A062811 A001470

Adjacent sequences:  A004664 A004665 A004666 * A004668 A004669 A004670

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.