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A077268 Number of bases in which n requires at least one zero to be written. 1
0, 1, 1, 2, 2, 3, 1, 3, 3, 4, 3, 5, 2, 3, 3, 4, 3, 6, 4, 6, 4, 3, 2, 7, 3, 4, 5, 7, 4, 7, 2, 6, 5, 5, 6, 8, 4, 5, 5, 8, 3, 7, 2, 5, 6, 4, 3, 9, 4, 7, 7, 7, 4, 9, 6, 8, 4, 4, 3, 11, 3, 4, 5, 7, 7, 9, 4, 6, 6, 9, 4, 11, 5, 6, 8, 7, 7, 9, 4, 9, 6, 6, 5, 12, 6, 5, 5, 9, 4, 11, 5, 6, 4, 4, 5, 11, 4, 7, 8, 10, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..101.

EXAMPLE

a(9)=3 since it requires zeros when written in bases 2, 3 or 9 (as 1001, 100 or 10 respectively).

CROSSREFS

Cf. A033093, A062842, A077266, A077267.

Sequence in context: A071681 A135621 A224764 * A162911 A131821 A204123

Adjacent sequences:  A077265 A077266 A077267 * A077269 A077270 A077271

KEYWORD

base,nonn

AUTHOR

Henry Bottomley, Nov 01 2002

STATUS

approved

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Last modified May 24 08:43 EDT 2013. Contains 225617 sequences.