login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A082757 Possible integer ratios of A/B, where A and B have no 0 in their decimal representation, all decimal digits of A and B are different and each digit is used only once. 1
2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 26, 27, 28, 29, 32, 35, 37, 38, 43, 44, 46, 52, 53, 59, 62, 66, 68, 134, 143, 148, 152, 155, 163, 164, 168, 173, 176, 178, 182, 185, 188, 194, 197, 198, 203, 206, 212, 215, 224, 225, 227 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The sequence has 179540 terms, the last being 98765432. - Giovanni Resta, Mar 21 2013

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..10000

EXAMPLE

13458 / 6729 = 2

17469 / 5823 = 3

15768 / 3942 = 4

...

98765432 / 1 = 98765432

MATHEMATICA

f[w_] := Select[Floor[w/10^#]/Mod[w, 10^#] & /@ {1, 2, 3, 4}, IntegerQ]; seq = Union[Flatten[f /@ (FromDigits /@ Permutations[ Range@9])]]; Length[seq] (* Giovanni Resta, Mar 21 2013 *)

CROSSREFS

Sequence in context: A102234 A174908 A344543 * A239089 A032881 A239216

Adjacent sequences: A082754 A082755 A082756 * A082758 A082759 A082760

KEYWORD

base,easy,fini,nonn

AUTHOR

Leonid Broukhis, May 21 2003

EXTENSIONS

a(37)-a(60) from Giovanni Resta, Mar 21 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 6 21:00 EST 2022. Contains 358648 sequences. (Running on oeis4.)