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A091837 Smallest b>1 such that 11*n is a repdigit in base b. 0
10, 10, 10, 10, 10, 10, 10, 10, 10, 21, 3, 21, 12, 13, 14, 15, 16, 17, 18, 19, 20, 3, 22, 21, 24, 21, 26, 21, 28, 21, 4, 21, 32, 21, 34, 21, 36, 21, 32, 21, 40, 32, 42, 43, 32, 45, 46, 23, 48, 24, 32, 25, 52, 26, 54, 27, 32, 28, 58, 29, 60, 4, 32, 31, 54, 32, 66, 33, 32 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..69.

Eric Weisstein's World of Mathematics, Repdigit

EXAMPLE

n=11: 121=11*11 in binary = '1111001', but in ternary = '11111',

therefore a(11)=3;

n=93: 1023=11*93 in binary = '1111111111', therefore a(93)=2.

CROSSREFS

Cf. A008593.

Sequence in context: A070565 A169932 A245403 * A316650 A216875 A166710

Adjacent sequences:  A091834 A091835 A091836 * A091838 A091839 A091840

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Mar 10 2004

STATUS

approved

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Last modified April 18 06:48 EDT 2019. Contains 322209 sequences. (Running on oeis4.)