A203070 Smallest positive multiple of n that is palindromic in base 3, ignoring trailing zeros.

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

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: A143178 A084190 A377484 * A088303 A193858 A054930

Adjacent sequences: A203067 A203068 A203069 * A203071 A203072 A203073

Keyword

nonn,base

Author

Harvey P. Dale, Dec 28 2011

Status

approved