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A091837 Smallest b>1 such that 11*n is a repdigit in base b. +0
1
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; listen)
OFFSET

1,1

LINKS

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.

Adjacent sequences: A091834 A091835 A091836 this_sequence A091838 A091839 A091840

Sequence in context: A010692 A109751 A070565 this_sequence A003855 A004209 A112867

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 10 2004

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.


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