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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: A102487 A102234 A174908 * 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

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Last modified June 16 05:18 EDT 2019. Contains 324145 sequences. (Running on oeis4.)