A204140 Numbers m such that both m and 7m are zeroless pandigital numbers (A050289).

123456789, 123678459, 123875649, 124563789, 124789563, 127593468, 127638945, 127648953, 132487695, 132596478, 134526789, 135246879, 135926748, 135947826, 136245978, 136597482, 136758924, 136875249, 137645982, 137689245, 137826459, 138752649, 138795462, 138976452

Offset: 1

Author

Zak Seidov, Jan 11 2012

Keywords

• nonn
• base
• fini
• full

Comments

There are precisely 24 such numbers.

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

Crossrefs

Cf. A050289, A204141.

Formula

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