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A115929 Numbers k such that k and 4*k, taken together, are zeroless pandigital, that is, use all the digits 1-9 exactly once. 5
3942, 4392, 5796, 7956 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

EXAMPLE

3942 and 3942*4=15768 use once all the digits from 1 to 9.

MATHEMATICA

Select[Range[1000, 9999], Union[IntegerDigits[#], IntegerDigits[4 #]] == {1, 2, 3, 4, 5, 6, 7, 8, 9} &] (* Tanya Khovanova, Jul 05 2021 *)

CROSSREFS

Cf. A054383, A064160, A115927, A115930, A115931, A115932.

Sequence in context: A252455 A233688 A162859 * A346135 A070185 A059354

Adjacent sequences:  A115926 A115927 A115928 * A115930 A115931 A115932

KEYWORD

nonn,base,fini,full

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified September 28 19:16 EDT 2021. Contains 347717 sequences. (Running on oeis4.)