A096685 Least k such that decimal representation of k*n contains only digits 0 and 6.

6, 3, 2, 15, 12, 1, 858, 75, 74, 6, 6, 5, 462, 429, 4, 375, 3918, 37, 3474, 3, 286, 3, 28722, 25, 24, 231, 24691358, 2145, 227814, 2, 21486, 1875, 2, 1959, 1716, 185, 18, 1737, 154, 15, 1626, 143, 153642, 15, 148, 14361, 1278, 125, 134694, 12, 1306, 1155

Offset

1,1

Comments

k*n may comprise digits of 6 or both 0 and 6. - Harvey P. Dale, Dec 29 2013

Links

Table of n, a(n) for n=1..52.

Formula

a(n) = A078245(n)/n.

Mathematica

k06[n_]:=Module[{k=1}, While[Max[Drop[DigitCount[k*n], {6, 10, 4}]]>0, k++]; k]; Array[k06, 52] (* Harvey P. Dale, Dec 29 2013 *)

Crossrefs

Cf. A004290, A078241-A078248, A079339, A096681-A096688.

Sequence in context: A272083 A357614 A096840 * A307150 A195457 A309974

Adjacent sequences: A096682 A096683 A096684 * A096686 A096687 A096688

Keyword

base,nonn

Author

Ray Chandler, Jul 12 2004

Status

approved