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A055240 Number of bases in which n is not divisible by any of its digits. 6
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 3, 0, 3, 0, 1, 1, 6, 0, 3, 1, 2, 0, 7, 0, 7, 1, 4, 4, 7, 0, 9, 4, 6, 1, 11, 0, 13, 2, 3, 6, 17, 0, 11, 3, 8, 3, 18, 2, 13, 3, 11, 9, 22, 0, 18, 9, 8, 4, 15, 1, 23, 8, 16, 5, 24, 1, 24, 12, 11, 8, 24, 4, 29, 4, 15, 14, 31, 1, 22, 14, 21, 8, 34, 1, 23 (list; graph; refs; listen; history; internal format)
OFFSET

1,17

EXAMPLE

a(27)=2 because it is written as 27 in base 10 and 25 in base 11 and 27 is not divisible by 2, 5 or 7

CROSSREFS

Cf. A055238-A055242.

Sequence in context: A165951 A094901 A030220 * A174559 A183035 A115634

Adjacent sequences:  A055237 A055238 A055239 * A055241 A055242 A055243

KEYWORD

base,nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), May 04 2000

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Last modified February 17 13:24 EST 2012. Contains 206031 sequences.