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A203070 Smallest positive multiple of n that is palindromic in base 3, ignoring trailing zeros. 2
1, 2, 3, 4, 10, 6, 28, 8, 9, 10, 121, 12, 13, 28, 30, 16, 68, 18, 608, 20, 84, 242, 23, 24, 100, 26, 27, 28, 203, 30, 1550, 160, 363, 68, 280, 36, 1850, 608, 39, 40, 82, 84, 4988, 484, 90, 644, 1222, 48, 784, 100, 204, 52, 212, 54, 1210, 56, 1824, 1276, 1003 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

notpal3Q[i_]:=Module[{id=IntegerDigits[i, 3]}, While[Last[id]==0, id = Most[id]]; id!=Reverse[id]]; lm3[n_]:=Module[{k=1}, While[notpal3Q[k n], k++]; k n]; Array[lm3, 80]

CROSSREFS

Cf. A141709.

Sequence in context: A241083 A143178 A084190 * A088303 A193858 A054930

Adjacent sequences:  A203067 A203068 A203069 * A203071 A203072 A203073

KEYWORD

nonn,base

AUTHOR

Harvey P. Dale, Dec 28 2011

STATUS

approved

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Last modified April 18 15:05 EDT 2019. Contains 322209 sequences. (Running on oeis4.)