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A204140 Numbers m such that both m and 7m are zeroless pandigital numbers (A050289). 1
123456789, 123678459, 123875649, 124563789, 124789563, 127593468, 127638945, 127648953, 132487695, 132596478, 134526789, 135246879, 135926748, 135947826, 136245978, 136597482, 136758924, 136875249, 137645982, 137689245, 137826459, 138752649, 138795462, 138976452 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

There are precisely 24 such numbers.

The only number m such that m and 8m are zeroless pandigital numbers is A050289(1)=123456789.

LINKS

Table of n, a(n) for n=1..24.

FORMULA

a(n) = A204141(n)/7.

CROSSREFS

Cf. A050289, A204141.

Sequence in context: A277057 A180408 A050289 * A288941 A175547 A053654

Adjacent sequences:  A204137 A204138 A204139 * A204141 A204142 A204143

KEYWORD

nonn,base,fini,full

AUTHOR

Moshe Levin, Jan 11 2012

STATUS

approved

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Last modified July 27 04:53 EDT 2017. Contains 289841 sequences.