login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A115931 Numbers n such that n and 7*n, taken together, are zeroless pandigital. 4
2394, 2637, 4527, 5274, 5418, 5976, 7614 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

2394 and 2394*7=16758 use once all the digits from 1 to 9.

MATHEMATICA

Select[Range[8000], Sort[Join[IntegerDigits[#], IntegerDigits[#*7]]] == Range[ 9]&] (* Harvey P. Dale, Aug 31 2017 *)

CROSSREFS

Cf. A054383, A064160, A115927, A115929, A115930, A115932.

Sequence in context: A279538 A098680 A226149 * A323344 A323341 A108055

Adjacent sequences:  A115928 A115929 A115930 * A115932 A115933 A115934

KEYWORD

nonn,base,fini,full

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 26 11:49 EST 2020. Contains 332279 sequences. (Running on oeis4.)